Tsis tas yuav txhawj txog kev sib tshuam cov yeeb nkab! Polypropylene (PPR) cov kav dej txuas txuas tau yooj yim, txuag qhov chaw, ua tsaug rau thermal rwb thaiv tsev thev naus laus zis los tiv thaiv kev xau, ua kom cov dej ntws zoo tsis muaj qhov thaiv.
