Umurnin samfur: Butyl roba sealing tef ya ƙunshi butyl roba da polyisobutylene da sauran kayan, compounded da polymer sheet abu, wanda yana da aikin m sealing na roba guda-gefe ko biyu-gefe sauran ƙarfi-free sealing tef fasalin Samfur: 1.High karfi. Babban...
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