Cov tshuaj ntsev ntsev yog qhov tseem ceeb faib ua 4 hom

Kev ntsuam xyuas ntsev tsuag yog muab faib ua 4 hom:

Neutral salt spray test (NSS);
Acetic acid ntsev tsuag kuaj (AASS);
Copper accelerated acetic acid ntsev spray test (CASS);
Alternating ntsev tsuag kuaj.

IKS PVD tuam txhab, kho kom zoo nkauj txheej tshuab, cuab yeej txheej tshuab, DLC txheej tshuab, kho qhov muag txheej tshuab, PVD nqus txheej kab, txoj haujlwm tig-key yog muaj. Hu rau peb tam sim no, E-mail: iks.pvd@foxmail.com