PPGI yog cov hlau phaj coated (galvanized, aluminized zinc, nickel-plated, thiab lwm yam) kev kho mob saum npoo (degreasing, phosphating, chromic acid passivation), tom qab ntawd coated nrog xim, thiab tom qab ntawd ci cov khoom.

Qhov zoo: nws muaj ob qho tib si lub zog kho tshuab ntawm cov hlau phaj thiab yooj yim rau kev ua tau zoo, thiab cov khoom siv organic muaj kev kho kom zoo nkauj thiab kev tiv thaiv corrosion. Lub txheej muaj kev nplaum zoo thiab tuaj yeem khaws cov xim tshiab rau lub sijhawm ntev.

Daim Ntawv Thov: dav siv hauv kev tsim kho, khoom siv hauv tsevrooj tog, cov chaw rau pej xeem thiab kev thauj mus los thiab lwm yam teb.