Z945x hluav taws xob elastic lub rooj foob rooj vag valve

Z945x hluav taws xob elastic lub rooj zaum foob lub rooj vag valve tuaj yeem nruab nrog ntau lub tshuab hluav taws xob raws li qhov xav tau ntawm cov neeg siv kom paub txog cov chaw taws teeb tswj thiab tswj tsis siv neeg. Nws yog rhiab heev, txhim khu kev qha thiab yooj yim rau nruab. Nws tuaj yeem siv dav hauv cov khoom siv hluav taws xob thiab cov twj tso kua mis hauv dej, dej phwj tuaj, kev tsim kho, roj av, tshuaj lom neeg, khoom noj khoom haus, tshuaj, lub teeb textile, hluav taws xob fais fab, nkoj, metallurgy, lub zog thiab lwm yam kav dej.