Tes txhuam lim kev tshawb xav

Dej ntawm cov inlet rau hauv lub cev kom luag saib taus, tus impurities dej deposit ntawm lub suab sib stainless hlau. Chengdu, thaum impurities noog mus rau ib lwm yam sij hawm, tig crank-uas tau tsav zuag los ntxuav lim, qhib lub valve ntws mus ua si. Belongs rho ib lim, disadvantage piv nrog txhuam tsis siv neeg lim lawm time-consuming, thiab ntxuav.