Donsen tau tsim nyob rau xyoo 1996, uas nyob hauv NINGBO qhov twg yog lub nroog loj thiab zoo nkauj thoob ntiaj teb chaw nres nkoj.Muaj ntau tshaj li 10 xyoo kev paub nyob rau hauv daim teb no, peb yog ib qho ntawm cov kws tshaj lij manufacturers tshwj xeeb hauv kev tsim cov kav dej yas rau dej thiab cov kav dej.
Peb cov khoom tseem ceeb yog PP-R kav thiab fittings, PP compression fittings, C-PVC kav thiab fittings, U-PVC kav thiab fittings, PE-RT pem teb cua kub kav, yas pwm thiab txhua yam yas li qub.Piv txwv li: PVC valve, PPR valve, C-PVC valve, BRASS valve.
