All standard parts are taken corrosion protection coat of zinc chromefilm.
所有标准件采用锌铬膜涂层防腐。
2
This product was formulated to meet the automotive industry corrosion requirements without the use of heavy metals (namely lead and chrome) in the paint film.
这种产品的推出是为了在漆膜中无重金属(即铅合铬)的情况下，更好的满足汽车工业防腐的要求。
3
Some differences between the rolls of high-speed steel and high-chrome iron in hot crown, friction coellieient, characteristics of oxidative film and anti-accident and so on are analyzed.