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| Standard Code | Standard Title | Standard Class | Order |
|---|---|---|---|
| HG/T 3520-2015 |
Determination of calcium for phosphorus-zine prefilming fluid in industrial circulating cooling water 工业循环冷却水磷锌预膜液中钙离子测定方法 |
China Chemical Industry
Standards prefilming |
 English PDF |
| HG/T 3778-2005 |
Technical regulations for chemical cleaning and prefilming of cooling water system 冷却水系统化学清洗、预膜处理技术规则 |
China Chemical Industry
Standards prefilming |
English PDF |
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