... 4)Fireproof 5)Zinc Coated:80g-275g PRANCE BUILDING MATERIAL CO.,LTD is a leading professional manufacturer of ceiling and drywall ... ,It also helps us to gain more projects, like government office ,hospital ,school, commercial building, airport, metro. 3.Galvanized Steel ... us now.Mob: 86-13923202008 (Mr.Edmond)PRANCE BUILDING MATERIAL CO.,LTD.http://www.fsprance.com Office wall partition system