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| Standard Code | Standard Title | Standard Class | Order |
|---|---|---|---|
| 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 |
China National Standards Chemical conversion coatings |
 English PDF |
| 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 |
China National Standards Chemical conversion coatings |
English PDF |
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