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Tham Txog Kev Siv Cov Roj Hmab Tsav Tsheb
Motorcycle chains yuav lo rau cov plua plav tom qab lub sijhawm, thiab feem ntau yuav tsum tau lubricating roj.Raws li kev sib kis ntawm qhov ncauj ntawm cov phooj ywg feem ntau, txoj kev tseem ceeb ntawm peb hom: 1. Siv cov roj pov tseg.2. nrog cov khib nyiab roj thiab butter thiab lwm yam kev tswj tus kheej.3. Siv cov saw tshwj xeeb o...Nyeem ntxiv