Yuav ua li cas xaiv qhov zoo npauj npaim valve?
Yas npauj npaim valve yog cov khoom siv tswj cov kua dej ntau, dav siv hauv kev lag luam, kev tsim kho thiab kev ua liaj ua teb. Muaj UPVC CPVC PPH PVDF PPH khoom npauj npaim valve. Tus kov tus npauj npaim loj muaj xws li DN50, DN65 DN80, DN100, DN 200, Tus cab iav ...
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