From the outside of the corrosion phenomenon within the General had a distinct drums package, mainly due to improper handling of chromeplate anterior surface, chromium and copper cladding health.

• 从边向外的腐化本体凡是有澄辉的小鼓包爆不收，次给是由于镀铬后暗不天办理不妥，铬层与铜层会面欠好变成的。