Standard gypsum board : * Faced with gray paper, using high-purity gypsum powder as man maiterial, mixed with fibers and proper quantity of addtitives to make board core. * The material has....
INTRODUCTION Shandong Wanjia Building Materials Co., Ltd. established in 2004. We are located at the food of Mountain Meng, the Chinese gypsum center--Baotai Town, Pingyi Country, Linyi City, ....