(1) txhawm rau txhim kho cov qauv txheej txheem thiab cov teeb meem ntawm Galvanized Txheej deg degree;
(2) txhawm rau txhim kho cov corrosion tsis kam thiab kev pabcuam lub neej ntawm cov galvanized txheej;
(3) txhawm rau tiv thaiv qhov tshwm sim ntawm "cov xim dawb" thaum lub sijhawm kev thauj mus los thiab chaw khaws khoom;
(4) kom ua raws li ib tug zoo heev substrate rau thov lwm cov txheej txheej.
