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The mechanism of the surface pretreatment is also studied.
对这种表面预处理的机理进行了初步探讨。
Directly after the surface pretreatment, the first coat must be applied.
在对表面进行过预处理后,必须立即进行第一层涂层的涂覆。
This product is mainly used for metals and metal products, metal rust surface pretreatment liquid.
本品适用于金属板、带、箱制品表面短期防锈保护。
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