China Chemical conversion GB Standards Search Result

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	GB/T 39495-2020 Metallic and other inorganic coatings—Chromate-free Chemical conversion coatings on allumion and its alloys 金属及其他无机覆盖层铝及铝合金无铬化学转化膜 - 英文版
	GB/T 34120-2017 Technical specification for power conversion system of electrochemical energy storage system 电化学储能系统储能变流器技术规范 - 英文版
	GB/T 23251-2009 Guideline for coal used in coal Chemical conversion 煤化工用煤技术导则 - 英文版
	GB/T 15519-2002 Chemical conversion coatings--Black oxide coating on iron and steel--Specification and test methods 化学转化膜钢铁黑色氧化膜规范和试验方法 - 英文版

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