免费看无码自慰一区二区,女同另类国产精品视频,天堂草原电视剧在线观看免费,日韩成人片免费永久在线观看网站,欧美国产精品一区久久,欧美一区二区性爱视频,一本无码aⅴ久久久国产,亚洲丁香五月婷婷

Comparison between Jiangmen engineering plastics and steel

2020-11-29 1554

The advantages of engineering plastics are not only that, but also many other features that cannot be achieved by other steels, such as:


1. Chemical resistance: the chemical corrosion resistance of engineering plastics is much better than that of metals;


2. Light specific gravity: low density is a major advantage of plastics, which reduces both cost and weight;

江門(mén)工程塑料

3. Self lubrication: it is not used as lubrication protection, which can reduce the protection cost and reduce the accident rate;


In addition, there are many characteristics such as resistance and high temperature resistance, which are good materials for replacing steel.


Source: Jiangmen engineering plastics http://www.wcyxs8888.com/