CertainTeed Roofing
Bilka
Pruszynski Ltd
McElroy Metal, Inc.
Fletcher Building
BlueScope Steel Limited
Safal Group
Singer-Ruser(HZ) Building Materials Tech.Co.,LTD
Ideal Roofing Co. Ltd
TILCOR
JINHU
ATAS International, Inc.
Dezhou Fuda Metal
Dezhou Fuda Metal
Boral
JINHU
Met-tile
Hangzhou Tianjing Building materials company