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TSG R0006-2014 (TSGR0006-2014)

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TSG R0006-2014: PDF in English
TSG R0006-2014
TECHNICAL SPECIFICATION FOR
SAFETY OF SPECIAL EQUIPMENT
Supervision regulation on
safety technology for gas cylinder
ISSUED ON: SEPTEMBER 05, 2014
IMPLEMENTED ON: JANUARY 01, 2015
Issued by: General Administration of Quality Supervision, Inspection and
Quarantine of PRC
Table of Contents
Foreword ... 3 
1 General ... 5 
2 Materials ... 13 
3 Design ... 17 
4 Manufacture ... 24 
5 Accessories of gas cylinders ... 29 
6 Filling and use ... 35 
7 Periodic inspection ... 42 
8 Supplementary ... 47 
Appendix A Gas cylinder’s variety, variety code, corresponding product
standard ... 48 
Appendix B Gas cylinder’s mark ... 50 
Appendix C Saturated vapor pressure, filling factor, physical properties of
commonly used cylindered gases ... 59 
Appendix D Periodic inspection report of gas cylinder ... 65 
Appendix E Catalog of national standards for gas cylinder ... 67 
Relevant regulations and specifications ... 69 
Foreword
In April 2008, the Special Equipment Safety Supervision Bureau (hereinafter
referred to as the Special Equipment Bureau) of the General Administration of
Quality Supervision, Inspection and Quarantine (hereinafter referred to as the
AQSIQ) issued the task book for drafting the “Supervision regulation on safety
technology for gas cylinder (hereinafter referred to as “Regulation”)” to the
China Special Equipment Inspection and Research Institute (hereinafter
referred to as the China Special Inspection Institute). In May 2008, the China
Special Inspection Institute organized relevant experts to set up a drafting group
and held the first working meeting in Beijing, to discuss the principles, key
contents, main issues, structure (chapter) framework for the drafting of the
Regulations, made specific work division on the drafting work, established a
time schedule for the drafting work. In October 2008 and March 2009, the
drafting group held the second and third drafting work meetings in Beijing, to
discuss and revise and form the draft of “Regulation” for comments. In
September 2010, the drafting group held the fourth working meeting in Zhejiang
Shangyu, to make corresponding modifications of the draft of “Regulation” for
comments. In April 2011, after reviewing the draft for comments, the Special
Equipment Bureau solicited for comments online in the form of ZJTH [2011]
No.19 documents. In September 2011, according to the solicited opinions, the
drafting group held its fifth working meeting in Beijing, formed a revision opinion
on the draft of “Regulation” for comments. In December 2011, the drafting group
revised and formed the “Regulation” for review in accordance with the spirit of
the fifth work meeting. In May 2012, the Special Equipment Bureau submitted
the draft for review to the Special Equipment Safety Technical Committee of the
General Administration of Quality Supervision, Inspection and Quarantine for
review. The drafting group revised the draft to form a draft for approval
according to the review opinions. On September 5, 2014, the “Regulation” was
approved by the General Administration of Quality Supervision, Inspection and
Quarantine for release.
The basic principles of the drafting of this “Regulation” are that, according to
the “Law on Safety of Special Equipment” and “Provisions on Safety
Supervision of Special Equipment”, on the basis of fully absorbing and
combining the actual situation and experience of safety supervision of gas
cylinder for many years, in order to strengthen the safety supervision of gas
cylinder, ensuring the safe use of gas cylinders, promoting the development of
the national economy, protecting the safety of people and property, it
establishes specific requirements for the safety supervision of gas cylinder in
such links as material, design, manufacturing, gas cylinder’s accessories, filling
and use, periodic inspections.
The main drafting organizations and personnel of this Regulation are as follows:
Dalian Boiler and Pressure Vessel Inspection and Research Institute: Hu
Jun, Han Bing
Capital University of Economics and Business: Wu Yuesang
Beijing Tianhai Industry Co., Ltd.: Zhang Baoguo
National Gas Cylinder Standardization Technical Committee: Huang
Qianghua, Wu Yan, Wu Hong, Liu Shouzheng
China Special Equipment Inspection and Research Institute: Bo Ke, Liang
Lin
Shanghai Special Equipment Supervisory inspection Technology Research
Institute: Sun Li
Shanghai Quality and Technical Supervision Bureau: Tan Jiuke
Sichuan Bureau of Quality and Technical Supervision: Liao Yang
Huizhou Quality and Technical Supervision Bureau: Pan Xianghua
Zhejiang Jindun Pressure Vessel Co., Ltd.: Ma Xiakang, Yin Xieping
Zhejiang University Institute of Chemical Machinery: Zheng Jinyang
Shijiazhuang Anruike Gas Machinery Co., Ltd.: Wang Hongxia
Supervision regulation on
safety technology for gas cylinder
1 General
1.1 Purpose
In order to ensure the safety of gas cylinders, protect the safety of people and
property, promote the development of the national economy, this Regulation is
hereby formulated in accordance with the “Law on Safety of Special Equipment”
and “Provisions on Safety Supervision of Special Equipment”.
1.2 Scope of application
This procedure is applicable to the seamless gas cylinders, welded gas
cylinders, welded insulated gas cylinders, wound gas cylinders, gas cylinders
filled with fillers, gas cylinder accessories which is used at a normal ambient
temperature of (-40°C ~ 60°C, note 1-1), nominal volume of 0.4 L ~ 3000 L,
nominal working pressure of 0.2 MPa ~ 35 MPa (gauge pressure, the same
below), has a product of pressure multiplied by volume of more than or equal
to 1.0 MPa • L, contains compressed gas, high (low) pressure liquefied gas,
low-temperature liquefied gas, dissolved gas, adsorbed gas, liquid with a
normal boiling point of equal to or less than 60°C, mixed gas (two or more than
two kinds of gases).
The materials, design, manufacture of gas cylinders for fire extinguishers, large-
volume gas cylinders used for long tube trailers and tube bundle containers, or
large-volume gas cylinders for electronic gas are in accordance with this
Regulation.
The main gas cylinder varieties, variety codes, corresponding product
standards as covered by this Regulation are as shown in Appendix A.
Note 1-1: The ambient temperature range of gas cylinders for vehicles and fire
extinguishers shall be in accordance with the relevant standards.
1.3 Special provisions on the scope of application
The cylinder accessories in the scope of application in clause 1.2 of this
Regulation shall, in addition to complying with this Regulation, also comply with
the provisions of the “Gas cylinder appurtenances safety and technical
supervision regulation” (TSG RF001). The gas cylinders for vehicles (Note 1-2)
shall, in addition to complying with this Regulation, also comply with the
provisions of the “Gas cylinders safety and technical supervision regulation for
vehicles” (TSG R0009).
Note 1-2: The gas cylinders for vehicles as covered in this Regulation refer to the gas
cylinders used to contain vehicle fuels (such as compressed natural gas, liquefied
natural gas, hydrogen, liquefied petroleum gas, liquefied dimethyl ether, etc.).
1.4 Scope of non-application
This Regulation does not apply to gas cylinders for fire extinguishers that are
only subjected to transient pressure during firefighting and are not subject to
pressure during storage, fixed-use cylinder-type pressure vessels, gas
cylinders for military equipment, nuclear facilities, aerospace vehicles, railway
locomotives, offshore installations and ships, special equipment for civil airports.
1.5 Relationship with standards and management systems
This Regulation specifies the basic safety requirements for gas cylinders. The
technical standards and management systems for gas cylinders shall comply
with the provisions of this Regulation.
The design, manufacture, filling, inspection of gas cylinders (including gas
cylinder’s accessories) shall comply with the corresponding standards as
specified in this Regulation. When there are no corresponding national
standards, industrial standards, or the case where it is beyond the current
national standards and industrial standards due to the adoption of new
materials, new technologies, new processes, it shall establish enterprise
standards. Enterprise standards shall be formulated by using or referring to
international standards (or advanced foreign standards); comply with the
requirements of Chinese laws and regulations and safety technical
specifications; fully seek the opinions of relevant competent authorities and
relevant organizations and institutions such as manufacturing, filling, inspection,
use. The content of the enterprise standard beyond the provisions of this
Regulation shall be subject to the standard review by the national gas cylinder
standardization technical organization. Meanwhile it shall follow the Appendix A
of this Regulation to define the variety code of the gas cylinder.
1.6 Special treatment for inconsistency with this Regulation
When the gas cylinders which use new materials, new technologies, new
processes, or otherwise has special requirements for use, are inconsistent with
the requirements of this Regulation, the manufacturing organization shall report
to the AQSIQ. The reporting data includes at least the basis, data, results of
relevant design, research, test, as well as the reviewed enterprise standards
and their type test reports. The AQSIQ entrusts relevant professional and
technical institutions to conduct technical review. Only after the results of the
review are approved by the AQSIQ, it allows to formally put into production and
use. The product standards on which the product is manufactured and type
tested shall comply with the provisions of 1.5 of this Regulation.
1.7 Identification of design document and type test
Cylinder products shall, according to the requirements of “Gas Cylinder Design
Documents Appraisal Regulation” (TSG R1003) and “Regulation for Type Test
of Gas Cylinders” (TSG R7002), be subjected to identification of design
documents of gas cylinder products and type test. After being qualified, the
design documents can be used for manufacturing. For the gas cylinder’s
accessories as configured for the gas cylinder, if there is requirements in the
safety technical specifications and the corresponding standards, it shall first be
subjected to the type test of the accessories, then the gas cylinder.
1.8 Imported gas cylinder
The imported gas cylinders shall, in addition to complying with the relevant
provisions on the inspection of import and export commodities, also meet the
requirements of this clause.
1.8.1 Manufacturing license
The overseas manufacturing organization of the imported gas cylinder shall
meet the requirements of 1.7 of this Regulation and obtain the corresponding
manufacturing license for special equipment in China.
1.8.2 Specifications and corresponding standards for design and
manufacture
All types of imported gas cylinders used in China shall meet the following
requirements:
(1) Design and manufacture comply with China's safety technical
specifications;
(2) For gas cylinder products without Chinese national standards, or
otherwise the scope of application and technical requirements of the
standards used differ from the Chinese national standards, the gas
cylinder product’s standards shall be evaluated by the relevant
professional technical institutions as commissioned by the AQSIQ.
1.8.3 Supervisory inspection of safety performance of imported gas
cylinders
The imported gas cylinders shall be subject to the supervisory inspection of
safety performance by the special equipment inspection agency (hereinafter
referred to as the supervisory inspection agency) with the supervisory
inspection qualifications, with inspection reports. The standards on which the
inspections are based shall comply with the provisions of 1.8.2 of this
Regulation, of which the manufacturing mark, exit-factory information and
documents of the imported gas cylinder shall also comply with the provisions of
1.14.1 and 4.10 of this Regulation.
1.8.4 Temporary imported gas cylinders
Temporary imported gas cylinders refer to cylinders as imported domestically,
filled, then exported overseas, or otherwise the gas cylinders as filled overseas,
imported domestically, then exported to the overseas manufacturing enterprise
after the gas in the cylinder is exhausted. It shall comply with the following
requirements:
(1) For organizations that are temporarily importing gas cylinders, it is
necessary to provide the safety performance certificate as issued by the
inspection agency which is approved officially by the country (or region)
wherein the property right of the gas cylinder is located to the supervisory-
inspection institute of the imported location;
(2) The supervisory inspection agency will inspect the safety performance of
the temporarily imported gas cylinders and issue the inspection report. For
the gas cylinders which require repeated entry but cannot be tested for
safety performance at the time of entry, they shall, after the gas in the
cylinder is exhausted, be subjected to the inspection of safety
performance. For gas cylinders that cannot be internally inspected due to
gas characteristics, etc., the importing organization shall provide the valid
inspection certificate as issued by the inspection agency of the country (or
region) where the gas cylinder’s property rights are located, and only after
confirmation by the supervisory inspection agency, it can only perform the
appearance inspection and determination of wall thickness, with
corresponding inspection reports. Gas cylinders that fail in the inspection
(or appearance inspection, determination of wall thickness) shall not be
used in China;
(3) The gas cylinders which are in the validity period of the safety
performance inspection report as issued by the supervisory inspection
agency may not be tested for safety performance when leaving the
country or re-entry;
(4) For gas cylinders that have only undergone appearance inspection and
determination of wall thickness, in case of re-entry, it shall follow the
requirements of item (2) of this clause to perform the inspection of safety
performance or appearance inspection and determination of wall
thickness;
(5) Organizations involved in the temporary import of gas cylinders shall
establish temporary archives of imported gas cylinders.
1.9 Exported back gas cylinder
Where the exported cylinder is returned back to China for use, its manufacturing
organization shall obtain the corresponding special equipment manufacturing
permit in China, meanwhile meet the requirements of the standard review,
identification of design documents of gas cylinder, type test of the imported gas
cylinders in clause 1.5 and 1.8 of this Regulation.
1.10 Cylindered gas medium
Cylindered gas medium is divided into the following types:
(1) Compressed gas: It refers to a gas that is completely gaseous after being
pressurized at -50°C, including a gas which has a critical temperature (Tc)
lower than or equal to -50°C, which is also called a permanent gas;
(2) High (low) pressure liquefied gas: It refers to a gas that is partially liquid
after pressurization at a temperature higher than -50°C, including high-
pressure liquefied gas which has a critical temperature (Tc) of -50°C ~
65°C, as well as low-pressure liquefied gas which has a critical
temperature (Tc) of above 65°C;
(3) Low-temperature liquefied gas: It refers to a gas that is partially liquid due
to cryogenic low-temperature during transportation. Those which has a
critical temperature (Tc) of generally lower than or equal to -50°C are also
known as cryogenic liquefied gas or refrigerated liquefied gas;
(4) Dissolved gas: It refers to the gas that dissolves in a solvent under
pressure;
(5) Adsorbed gas: It refers to the gas that is adsorbed to the adsorbent under
pressure.
1.11 Nominal working pressure of gas cylinder
(1) The nominal working pressure of a gas cylinder which contains
compressed gas refers to the defined (charging) pressure when the gas
in the cylinder reaches a completely uniform state at the reference
temperature (20°C);
(2) The nominal working pressure of a gas cylinder which contains liquefied
gas refers to the upper limit of the gas pressure in the cylinder at a
temperature of 60°C;
(3) The nominal working pressure of a gas cylinder which contains dissolved
gas refers to the standing pressure (at 15°C) of the gas in the gas cylinder
under chemical, thermal and diffusion equilibrium conditions;
(4) The nominal working pressure of the welded insulated gas cylinder refers
to the highest pressure that can be reached in the gas phase at the top of
the liner under normal working conditions of the gas cylinder;
(5) The nominal working pressure of the gas cylinder which contains liquids
with a standard boiling point of equal to or lower than 60°C and mixed gas
shall be as specified by the relevant standards.
The selection of the nominal working pressure of the gas cylinder shall be in
accordance with the provisions of 3.6 of this Regulation.
1.12 Classification of cylinders
1.12.1 Classification by nominal working pressure
Gas cylinders are divided into high-pressure gas cylinders and low-pressure
gas cylinders according to the nominal working pressure:
(1) High-pressure gas cylinder refers to a gas cylinder which has a nominal
working pressure of more than or equal to 10 MPa;
(2) Low-pressure gas cylinder refers to a gas cylinder which has a nominal
working pressure of less than 10 MPa.
1.12.2 Classification by nominal volume
Gas cylinders are divided into small-volume, medium-volume, large-volume
cylinders by the nominal volume:
(1) Small-volume gas cylinder refers to a gas cylinder which has a nominal
volume is less than or equal to 12 L;
(2) Medium-volume gas cylinder refers to a gas cylinder which has a nominal
volume of more than 12 L and less than or equal to 150 L;
(3) Large-volume gas cylinder refers to a gas cylinder which has a nominal
volume of more than 150 L.
1.13 Special requirements for gas cylinder
Gas cylinders which contain a single gas must be dedicated. It is only allowed
to be filled with the gas consistent with the manufacturing mark. It shall neither
change the gas cylinder’s manufacturing mark and its use, nor mix other gases
or add additives.
The gas cylinder which contains the mixed gas must be filled with the mixed
gas of the same characteristics (Note 1-3), according to the gas characteristics
as determined based on the gas cylinder’s mark. It is not allowed to modify a
single gas or a mixed gas of different characteristics.
Note 1-3: Gas characteristics refer to toxic (T), oxidized (O), flammable (F), corrosive
(C).
1.14 Gas cylinder’s mark
The gas cylinder’s mark includes a manufacturing mark and a periodic
inspection mark. Manufacturing marks usually have a manufacturing stencils
mark (including the mark on the nameplate), a label mark (applied on the
cylinder or under a transparent protective layer), a printed mark (printed on the
cylinder), a gas cylinder’s color mark; etc. The periodic inspection marks
generally include inspection stencils marks, label marks, inspection mark rings,
inspection color codes. On the gas cylinder which is used to supply fuel to taxi,
it shall have a permanent taxi identification mark (Note 1-4).
Note 1-4: For cylinders used for supplying fuel to taxi, the cylinder’s manufacturing
organization, installation organization or periodic inspection agency shall, after
confirming the purpose of gas cylinder, make a permanent mark of “TAXI” which is
representative of Taxi at the prominent position of the gas cylinder’s mark (steel gas
cylinders use stencils; wrapped gas cylinders use resin-covered labels).
1.14.1 Gas cylinder’s manufacturing mark
1.14.1.1 Stencils marks, label marks or printed marks of gas cylinders
The manufacturing mark of the gas cylinder is the basis for identifying the gas
cylinder. The arrangement and content of the marking shall comply with the
provisions of Appendix B of this Regulation and corresponding standards.
Among them, the manufacturing organization’s code (such as letters, patterns,
etc.) shall be reported to the China Gas Cylinder Standardization Organization
for future reference.
The manufacturing organization shall, in accordance with the provisions of the
corresponding standards, make a permanent manufacturing mark on each gas
cylinder. Steel gas cylinders or aluminum alloy gas cylinders use stencils.
Wrapped gas cylinders use plastic-sealed gas cylinders. Non-refillable gas
cylinders are printed on cylinders. Welded insulated gas cylinders (including
automotive welded insulated cylinders) and liquefied petroleum gas cylinders
are identified by the embossed letter or welding-sealed nameplate.
Other products that cannot be marked by the previous method shall use the
marking method which complies with the corresponding standards for gas
cylinder products. The manufacturing organization shall consider the placement
requirements of the information label (bar code, QR code, RF label, etc.) of gas
cylinder at the time of design.
It is encouraged for the cylinder manufacturing organization or the filling
organization to implement the life cycle safety management of the gas cylinders
by means of information.
1.14.1.2 Color marks, typeface, color rings on the outer surface of gas
cylinder
The color mark, typeface, color ring on the outer surface of the gas cylinder
shall comply with the provisions of GB 7144 “Colored cylinder mark for gases”.
Where there are special requirements for color mark, typeface, color ring, it
shall comply with the requirements of the corresponding standards on gas
cylinder product. The color, typeface, color ring of gas cylinders which contain
gas and mixed gas that are not included in the national standard shall be clearly
defined by the national gas cylinder standardization technical organization.
Meanwhile it shall be implemented in accordance with the provisions of clause
1.5 of this Regulation.
When the liquefied petroleum gas filling organization uses the information label
to make management and has more than 300000 liquefied petroleum gas
cylinders of self-owned property rights, it shall emboss an obviously raised
property right marks on the upper head of the dedicated gas cylinders. The
organizations with property rights shall formulate enterprise standards such as
the special gas cylinder color marks or the valves and threads of special
structural forms. Such standards shall be reviewed by the national gas cylinder
standardization technical organization.
1.14.1.3 Marking of welded insulated gas cylinders (including automotive
welded insulated gas cylinders)
(1) For the gas cylinders which are filled with liquid oxygen (O2), nitrous oxide
(N2O), liquefied natural gas (LNG), on an eye-catching position at the
head of the outer package, it shall emboss the raised medium symbols
such as “O2” and “N2O” or “LNG”;
(2) The product nameplate shall be firmly welded to the non-removable
accessories;
(3) On the cylinder, it shall attach a product label which is consistent with the
medium as marked on the nameplate. The background color and text color
of the label shall be consistent with the cylinder’s color and text color of
the corresponding medium in GB 7144.
1.14.2 Periodic inspection mark of gas cylinder
The periodic inspection stencils mark, label mark, inspection mark ring,
inspection color code of the gas cylinder shall comply with the provisions of
Appendix B of this Regulation. The gas cylinder’s periodic inspection agency
shall stamp the inspection qualification stencils on the qualified gas cylinder or
make a permanent inspection qualification mark on the gas cylinder one by one.
1.15 Supervisory management
(1) The General Administration of Quality Supervision, Inspection and
Quarantine and the quality supervision departments at all levels are
responsible for the safety supervision of gas cylinders and supervise the
implementation of this Regulation;
(2) The design, manufacture, filling, inspection, use, etc. of gas cylinders
(including gas cylinder’s accessories) shall strictly implement the
provisions of this Regulation;
(3) The manufacturing, filling, inspection agencies of gas cylinders shall, in
accordance with the safety technical specifications and corresponding
standards, promptly input relevant data on manufacturing, use registration,
filling, inspection into the relevant special equipment information
management system.
2 Materials
2.1 Basic requirements
(1) The selection of gas cylinder’s materials shall consider the mechanical
properties, chemical properties, process properties, compatibility with the
medium;
(2) The selection of gas cylinder’s materials shall meet the restrictive
requirements of the corresponding gas cylinder product standards for
materials. The gas cylinder’s materials shall also meet the requirements
of the corresponding material standards (Note 2-1);
(3) When selecting the metal materials which are not listed in the national
standard to manufacture the main part of the gas cylinder, it shall be
subject to technical review in accordance with the provisions of 1.6 of this
Regulation. The review shall focus on the relevant testing of materials, the
test data, the technical documents on trial production of materials
(including the technical conditions on product supply), etc.;
(4) The material’s manufacturing organization shall make a clear and firm
stencil mark on the obvious part of the material or use other methods of
marking;
(5) The material’s manufacturing organization shall provide the material
quality certificate to the material user. The content of the material’s quality
certificate shall be complete and clear; and shall have the quality
inspection seal of the material manufacturing organization;
(6) When the gas cylinder’s manufacturing organization obtains the materials
for gas cylinders from the non-material manufacturing organization, it shall
obtain the original copy of the quality certificate as provided by the material
manufacturer or the duplicated copy of the seal of the material supplier’s
official inspection seal and the seal of the responsible person;
(7) The cylinder’s manufacturing organization shall be responsible for the
authenticity, traceability, consistency of the selected cylinder material and
material’s quality certificate.
Note 2-1: The corresponding standards as mentioned in this Regulation refer to the
corresponding national standards, industrial standards or reviewed enterprise
standards.
2.2 Use of materials of overseas designations
(1) The materials of overseas designations shall be the materials permitted
by the overseas pressure vessel or the technical specifications for gas
cylinder safety and corresponding standards and have been used
overseas. For the materials which have corresponding technical
requirements, performance data, process, the technical requirements of
the materials shall not be lower than technical requirements for materials
of similar designations in domestic material standards (such as
phosphorus, sulfur content, sampling location for impact specimens,
sampling direction, impact energy index, elongation at break, etc.).
Meanwhile it shall not be lower than the requirements of this Regulation
and corresponding standards on gas cylinders in China;
(2) The scope of use of materials of overseas designations shall comply with
the provisions of the corresponding overseas product standards,
meanwhile it shall also comply with the provisions on the use of materials
of similar designations in the domestic material standards;
(3) The material’s quality certificate shall comply with the provisions of clause
2.1 of this Regulation;
(4) Before using the overseas materials to manufacture gas cylinders, the
gas cylinder’s manufacturing organization shall carry out process tests
(such as cold-hot processing test, evaluation of welding and heat
treatment process) according to the corresponding requirements for the
product manufacturing process, meanwhile formulate corresponding
technical documents;
(5) For the materials of overseas designations that have mature experience
of use, if they are widely used domestically, they can be directly included
in the corresponding standards on gas cylinder product.
2.3 Use of material and transplantation of mark
2.3.1 Basic requirements
(1) The gas cylinder’s manufacturing organization shall review the material
quality certificate and material mark of the incoming materials; verify and
analyze the chemical composition of the metal materials which are used
to make the gas cylinders according to the furnace number; carry out
verification and inspection of the mechanical properties according to the
batch number (except for the mechanical properties of steel pipes, steel
billets, etc., which are determined by heat treatment); carry out non-
destructive testing according to the relevant standards (except for
seamless steel pipes which has been subjected to 100% ultrasonic non-
destructive testing by steel mills) and verification inspection of low-fold
organization;
(2) All inspections and tests may be used after being confirmed of complying
with the provisions of this Regulation and its corresponding material
standards;
(3) The materials used to manufacture the pressure components of the gas
cylinders shall be subject...
......
(Above excerpt was released on 2019-07-12, modified on 2021-06-07, translated/reviewed by: Wayne Zheng et al.)
Source: https://www.chinesestandard.net/PDF.aspx/TSGR0006-2014