FR four Fluorine soft to lead bearing regard bronze silk screen as the matrices, pass the special craft . Rolling politef of surface and other mixture which pack the antifrictional material . It has a lower coefficient of friction, teaches the good wear-resisting characteristic. Because it soft and of good performance, can make steel and steel to lack of mutual understanding that rub, realize , have interval , have noise , have oil have maintaining , pollution-free ideal purpose to lubricate. At present, the products have already been applied c. extensively.

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