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GB/T 25071-2010 English PDF

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GB/T 25071-2010: Classification and codes for products of gems and precious metals
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Basic data

Standard ID GB/T 25071-2010 (GB/T25071-2010)
Description (Translated English) Classification and codes for products of gems and precious metals
Sector / Industry National Standard (Recommended)
Classification of Chinese Standard A24
Classification of International Standard 35.040
Word Count Estimation 16,123
Date of Issue 2010-09-02
Date of Implementation 2010-12-01
Quoted Standard GB/T 16552-2003; GB/T 17684-2008
Regulation (derived from) Announcement of Newly Approved National Standards No. 4 of 2010 (total 159)
Issuing agency(ies) General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China
Summary This standard specifies the jewelery and precious metals products, materials and species classification and code. This standard applies to jewelery and precious metals products, information processing and exchange of information.

GB/T 25071-2010: Classification and codes for products of gems and precious metals

---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
Classification and codes for products of gems and precious metals ICS 35.040 A24 National Standards of People's Republic of China Jewelery and precious metal products Classification and codes Issued on. 2010-09-02 2010-12-01 implementation Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China Standardization Administration of China released

Table of Contents

Introduction Ⅲ 1 Scope 1 2 Terms and definitions 1 Classification System 1 3 Appendix A (informative) code combination sequence Conventions 11 Reference 12

Foreword

Appendix A of this standard is an informative annex. The standard proposed by China National Institute of Standardization. This standard by the National Standardization Technical Committee on Information Classification and Coding (TC353) centralized. This standard is mainly drafted by. National Gems & Jewelry Management Center, the Chamber Century (Beijing) Electronics Development Company Limited Division, the China National Institute of Standardization. The main drafters of this standard. Sun Fengmin, Sunguang Zhi, Ke Jie Jia weights, Chengya Guang, Li Gang. Jewelery and precious metal products Classification and codes

1 Scope

This standard specifies the classification codes and jade jewelry and precious metals products, materials and variety. This standard applies to jewelery, and information processing and information exchange precious metals products.

2 Terms and definitions

The following terms and definitions apply to this standard. 2.1 Jewelery gems Natural jade jewelry (including natural stones, natural jade and natural organic gem) and artificial gems (including synthetic stones, artificial stones, Mosaic stones and reconstructed precious) collectively, referred to as the gem. [GB/T 16552-2003, Definition 3.1] 2.2 Precious metals preciousmetals Gold, silver and platinum group metals collectively. [GB/T 17684-2008, Definition 2.1] 2.3 Jewelery and precious metals products productsofgemsandpreciousmetals Jade jewelery or precious metal as the main raw material, semi-finished and finished products.

3 Classification System

3.1 Principles and methods of classification For jewelery and precious metals products can be classified according to the following classification. a) according to its material to be divided; b) classified in accordance with its varieties. This chapter were given jewelery and precious metals products, materials classification and species classification code table code table. 3.2 Material Categories 3.2.1 Classification and Coding Material classification taxonomy using the wire material for jewelery and precious metals products to be divided, the coding method using the six-digit code level, 1,2 indicates major categories, 3, 4-bit representation, Class 5,6 indicates subcategories, see Figure 1. ×× 1,2 indicates major categories ×× 3 and 4 indicates the class ×× presentation code 5,6 indicates subcategories Figure 1 classification code structure of the material 3.2.2 code table Classification and material classification codes are shown in Table 1.

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