16 11 月 2017
11 月 16, 2017

Nine Types of Fastener Surface Treatment

Manufacturer ZZ provides various coating of bolts and nuts for overseas.

There are nine types of Fastener Surface Treatment, like Electro-Zinc, Phosphating, Oxidation (Blackening), Cadmium(Electro) Plating, Electrochromism, Silver and Nickel Plating, Hot-Dip Zinc, Zinc Infiltration and Dacromet
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