Kuchokera pazinthu zomwe zimagwiritsidwa nchito nthawi zambiri timatha kuzigawa kukhala mphira wa氟,mphira wa sililikoni, mphira wa丁腈,mphira wa氯丁橡胶ndi三元乙丙橡胶zisanu。Zida za mphete zosindikizira mphira Mtundu woyamba, mphete ya rabara ya Viton。Imalimbana ndi kutentha kwambiri, mafuta, asidi ndi碱komanso ma氧化剂amhamvu ....
Werengani zambiri