China Granite Stair Step We supply many kinds of Granite Stairs / ... , like G603, G635, G654, G682, G684, G687 and so on. China Granite Stair Step1.Color: grey, white, black, yellow, green, red ... degree, as requested, Thickness tolerance: +/-1mm, +/-1.5cm or +/-2mm, The quality requirements must be comfirmed by customer. Welcome to inquiry ...