Zodzipangira zokha zodzipaka mafuta zimapangidwa ndi zinthu zodzipangira zokha, zomwe zimapangidwa ndi osakaniza a PTFE, carbon, graphite, glass fiber, polima organic matter ndi zitsulo kumbuyo.Kapangidwe kake kaphatikizidwe kumaphatikiza zabwino za zida zingapo, kuwonetsa zinthu zapadera kwambiri: sh ...
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