... 1. Color: Grey, white, black, yellow, green, red, brown and etc.; 2. Standard Size: 305x305mm (12"x12"), 400x400mm (16"x16 ... "), 457x457mm (18"x18") and 600x600m (24"x24"), other sizes are available upon request; 3. Normal thickness ... : 10mm, 12mm, 15mm, 20mm, 30mm and ect.; 4. Surface finish: ...