Ki materyèl prensipal yo nan woulèt? Ki materyèl prensipal yo nan woulèt? An poliyiretàn, fè jete ak asye jete, wou kawotchou nitril (NBR), kawotchou nitril, wou kawotchou natirèl, wou kawotchou silikon fluoroprene, wou kawotchou klowopren, wou kawotchou butil, kawotchou silikon (SILICOME), EPDM fwote...
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