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GB/T 45921-2025 English PDF

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US$469.00 · In stock
Delivery: <= 4 days. True-PDF full-copy in English will be manually translated and delivered via email.
GB/T 45921-2025: Organic-electrochromic laminated glass used in buildings
Status: Valid

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 45921-2025	469	Add to Cart	4 days	Organic-electrochromic laminated glass used in buildings	Valid

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Basic data

Standard ID: GB/T 45921-2025 (GB/T45921-2025)
Description (Translated English): Organic-electrochromic laminated glass used in buildings
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: Q33
Classification of International Standard: 81.040.30
Word Count Estimation: 23,261
Date of Issue: 2025-06-30
Date of Implementation: 2026-01-01
Issuing agency(ies): State Administration for Market Regulation, China National Standardization Administration

GB/T 45921-2025: Organic-electrochromic laminated glass used in buildings

---This is an excerpt. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.), auto-downloaded/delivered in 9 seconds, can be purchased online: https://www.ChineseStandard.net/PDF.aspx/GBT45921-2025
ICS 81.040.30 CCSQ33 National Standard of the People's Republic of China Organic electrochromic laminated glass for buildings Released on June 30, 2025 Implementation on January 1, 2026 State Administration for Market Regulation The National Standardization Administration issued

Preface III 1 Scope 1 2 Normative references 1 3 Terms and Definitions 1 4 Requirement 2 4.1 General Principles 2 4.2 Appearance quality of discolored area 2 4.3 Dimensional deviation 3 4.4 Visible light transmittance in the color changing area 3 4.5 Total solar transmittance in the color changing area 4 4.6 UV transmittance of discolored area 4 4.7 Other optical properties of the color-changing area 4.8 Conversion Time 4 4.9 Color uniformity of discolored area 5 4.10 Power Limit 5 4.11 Insulation resistance 5 4.12 Temperature and humidity durability 5 4.13 Radiation durability 5 4.14 Cyclic durability 5 5 Test methods 5 5.1 General Principles 5 5.2 Appearance quality of discolored area 6 5.3 Dimensional deviation 6 5.4 Visible light transmittance in the color changing area 7 5.5 Total solar transmittance in the color changing area 8 5.6 UV transmittance of discolored area 8 5.7 Other optical properties of the color-changing area 8 5.8 Conversion Time 9 5.9 Color uniformity of discolored areas 11 5.10 Power Limit 12 5.11 Insulation resistance 13 5.12 Temperature and humidity durability 13 5.13 Radiation durability 14 5.14 Cyclic durability 14 6 Inspection Rules 15 6.1 Inspection categories 15 6.2 Factory Inspection 15 6.3 Type inspection 16 7 Packaging, labeling, transportation and storage 17 7.1 Packaging 17 7.2 Sign 17 7.3 Transportation 18 7.4 Storage 18 Preface This document is in accordance with the provisions of GB/T 1.1-2020 "Guidelines for standardization work Part 1.Structure and drafting rules for standardization documents" Drafting. Please note that some of the contents of this document may involve patents. The issuing organization of this document does not assume the responsibility for identifying patents. This document is proposed by China Building Materials Federation. This document is under the jurisdiction of the National Technical Committee for Standardization of Architectural Glass (SAC/TC255). This document was drafted by. China National Testing Holding Group Co., Ltd., Guangyi Intelligent Technology (Suzhou) Co., Ltd., Jiangsu Xiuqiang Glass Craft Co., Ltd., China Building Materials Science Research Institute Co., Ltd., Niruo (Jiangsu) Electronic Technology Co., Ltd., Qinhuangdao Glass Industry Research and Design Institute Co., Ltd., Yilai Chuang (Beijing) Intelligent Materials Technology Co., Ltd., Zhuhai Haifa Xingye New Materials Technology Co., Ltd. Tianjin Yaopi Engineering Glass Co., Ltd., Chongqing Youyou Lihong Glass Co., Ltd., Zhongli Glass Co., Ltd., Ningbo Niruo Electronic Technology Co., Ltd. Co., Ltd., Building Materials Industry Technology Information Research Institute, and China Building Materials Inspection and Certification Group Qinhuangdao Co., Ltd. The main drafters of this document are. Ding Zuoxin, Li Junjie, Li Huanhuan, Huo Yongchen, He Jiazhi, Meng Zheng, Hu Keyin, Hu Haohua, Song Xingwang, Li Guozhang, Shi Lin, Huang Di, Wei Nana, Liu Chengxiong, Jia Lidan, Sun Zhao, Yang Xuedong, Xu Wei, Yang Shuwei, Yang Guixiang, Wang Xin, Wu Qin, Tian Li, Wang Meili, Du Peng, Yang Liyong, Su Lili, Guo Jianbao, Zhang Hongyuan, Li Jiaying, Li Zhi, Feng Chunyan, Cheng Jianfei, Cao Zhenhu, Yu Hongliang, Liu Yuanmiao, Bao Ji, Zhang Rui, Tu Hao, Li Ming, and Wang Peikai. Organic electrochromic laminated glass for buildings 1 Scope This document specifies the requirements, test methods, inspection rules, and packaging, marking, transportation and Storage. This document applies to the design, production and delivery of organic electrochromic laminated glass for architectural use. 2 Normative references The contents of the following documents constitute the essential clauses of this document through normative references in this document. For referenced documents without a date, only the version corresponding to that date applies to this document; for referenced documents without a date, the latest version (including all amendments) applies to This document. GB/T 191 Pictorial symbols for packaging, storage and transportation GB/T 2680 Visible light transmittance, direct sunlight transmittance, total solar energy transmittance, ultraviolet light transmittance and other properties of architectural glass Determination of parameters of closed window glass GB/T 5137.2 Test methods for automotive safety glass - Part 2.Optical performance test GB/T 5137.3-2020 Test methods for automotive safety glazing - Part 3.Resistance to radiation, high temperature, humidity, fire and simulated climate test GB/T 11942 Color measurement method for colored building materials GB 15763.3 Safety glass for building Part 3.Laminated glass GB/T 42788-2023 Smart Glass Terminology JC/T 2631-2021 Electrochromic Glass 3 Terms and Definitions The terms and definitions defined in GB 15763.3 and GB/T 42788-2023 and the following apply to this document. 3.1 organic-electrochromic film A film in which the organic color-changing dielectric material undergoes a reversible electrochemical reaction under the action of an external electric field and exhibits a change in spectral transmittance. [Source. GB/T 42788-2023, 3.4, with modifications] 3.2 A laminated glass product having at least one layer of organic electrochromic film (3.1) in its structure and capable of achieving spectral transmission change. 3.3 bleached state Under given control conditions, the visible light transmittance of electrochromic glass reaches the highest state. [Source. JC/T 2631-2021, 3.3] 3.4 tintedstate Under given control conditions, the visible light transmittance of electrochromic glass reaches the lowest state. ......

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Tips & Frequently Asked Questions:

Question 1: How long will the true-PDF of GB/T 45921-2025_English be delivered?

Answer: Upon your order, we will start to translate GB/T 45921-2025_English as soon as possible, and keep you informed of the progress. The lead time is typically 2 ~ 4 working days. The lengthier the document the longer the lead time.

Question 2: Can I share the purchased PDF of GB/T 45921-2025_English with my colleagues?

Answer: Yes. The purchased PDF of GB/T 45921-2025_English will be deemed to be sold to your employer/organization who actually pays for it, including your colleagues and your employer's intranet.

Question 3: Does the price include tax/VAT?

Answer: Yes. Our tax invoice, downloaded/delivered in 9 seconds, includes all tax/VAT and complies with 100+ countries' tax regulations (tax exempted in 100+ countries) -- See Avoidance of Double Taxation Agreements (DTAs): List of DTAs signed between Singapore and 100+ countries

Question 4: Do you accept my currency other than USD?

Answer: Yes. If you need your currency to be printed on the invoice, please write an email to Sales@ChineseStandard.net. In 2 working-hours, we will create a special link for you to pay in any currencies. Otherwise, follow the normal steps: Add to Cart -- Checkout -- Select your currency to pay.