Advantage : ① yakanakisa michina zvivakwa.Nylon yakakwira mechanical simba, yakanaka kuoma.② self-lubrication, abrasion kuramba.nylon ine yakanaka self-lubrication, iyo friction coefficient idiki, uye nekudaro, sechikamu chekufamba kwayo kwehupenyu hurefu.③ yakanakisa kupisa kusagadzikana.Sezvakaita negirazi ...
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