By using tri-chrome passivation with top-coat, the decorating, mechanical performance and corrosion resistance will be all improved.
三价铬经封闭钝化后，装饰效果、力学性能和抗腐蚀能力会有所提高。
By using tri-chrome passivation with top-coat, the decorating, mechanical performance and corrosion resistance will be all improved.
三价铬经封闭钝化后，装饰效果、力学性能和抗腐蚀能力会有所提高。
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