Using effect of zinc-aluminum multicomponent thermochemcial treatment rust-proof fasteners

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　　2、Application Case Location

　　Using effect of zinc-aluminum multicomponent thermochemcial treatment rust-proof fasteners

　　【Operating condition】

　　Acid rain corrosion：★★★★★ photo-corrosion：★★★★★

　　salt spray corrosion：★★★★★★ impact damage：★★★

6 years after the use of zinc-nickel infiltration layer

6 years after the use of multicomponent alloy thermochemcial treatment

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