... , front natural cleft 3. Own quarries G603 G664 G687 G562 Chinese granite stairs1. material: granite, marble2)size: step: 25-35cm*100 ... G664, G562, G687, G603, and processing factories, also is manufacturer of granite& marble slab and cut to size, curbstones, countertop, tombstone ... etc. For 6 years, we have being at good reputation of the lower price and fine work.