『Chromium plating＆Heat exchanger 』

• Piston and piston ring are the main parts of engine. The piston group is composed of piston pin and other parts. Anodization of piston and surface treatment of piston ring chromium plating and other power parts are a process in the manufacturing of piston and piston ring, especially the surface treatment of piston ring chromium plating, chromium base electroplated composite ceramics, PVD and other piston rings is more important……
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