粉嫩白丝JK被啪到喷水,东京热人妻系列无码专区,东京热人妻中文无码AV

    Gymsum Based Flame Retradant Board

    Advanced Gel Technolgy, with high strength gympsum as main raw materials.

       Gypsum based flame retardant board: Gypsum based flame retardant plate adopt advanced gel technology, with high strength gypsum as main raw materials, and add Gao Qiangshi core plate made of fiber reinforced material, internal structure, with green environmental protection, high strength, the powerthat grasp a harmmer, good stability in case of fire, sound insulation effect is remarkable, prevent deformation shock the advantages of its comprehensive performance is superior to the traditional wooden flame tetardant plate.

    粉嫩白丝JK被啪到喷水,东京热人妻系列无码专区,东京热人妻中文无码AV