1)Even coloring 2)Logo embossing 3)Less production procedure and workload 4)Rustless ... , perlite grains, expanded rapidly through high temperature over 1400`C.2. Water proof and non-corroding:Due to its natural and ... mesh, 5% plaster, 5% other inorganic materials.Production specification: 900*2100, 1150*2250mm with thickness 30mm, 36mm, 40mm, 43mm, 46mm, 48mm ...