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Alkaline zinc surface treatment
  
Performance
1, coating adhesion: bake 220 degrees for half an hour, immersed in water does not bubble;
2, corrosion resistance: 120h neutral salt spray test no white rust, 480 h neutral salt spray test no red rust;
3, coating film thickness: greater than 7.5;
4, cyanide: zero environmental protection;
5, waste water discharge: Standard
CRAFTS PROCESS
  
CRAFTS PROCESS
  
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