Spiral simbi pombi inoda kurapwa kwekunze kuti iwedzere kusimba: 1. Pamusoro peiyo anticorrosive spiral chubhu inocheneswa nezvinonyungudutsa uye emulsions, iyo inogona kubvisa iyo organic matter pamusoro peiyo spiral chubhu, asi haigone kubvisa ngura, oxide scale, welding flux, nezvimwewo, saka kuchenesa ...
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