1. Chrome plating rau saum npoo los txhim kho hnav tsis kam;
2. Cov qhov xoob yog plated nrog chromium los txhim kho cov roj saum npoo av thiab ua kom ceev khiav-hauv;
3. Engraved nyob rau hauv lub puab nto los txhim kho elasticity;
4. Ib qho roj cia zawj yog muab rau ntawm lub nplhaib sab nraud kom yooj yim lubrication;
5. Sab nrauv ntawm lub nplhaib yog plated nrog tooj liab kom yooj yim khiav-hauv;
6. Molybdenum yog txau rau ntawm lub nplhaib sab nraud kom txo qhov adhesion thiab hnav.

Sumarized raws li nram no:
Txhim kho kev hnav tsis kam: chrome plating, nitriding
Txhim kho qhov pib khiav-hauv kev ua haujlwm: tooj liab plating, phosphating, sulfurizing
Txhawm rau tiv thaiv kev hnav khaub ncaws: tshuaj tsuag molybdenum