... . 3) ISO 9001 4)working Specifications and details of goodsBlack granite is featured hard texture, uniform color, strength compression ... degree: over 100 degreeTolerance of thickness:1cm:+/-0.5mm,1.8cm:+/-1mm, 2cm:+/-2mm2 Materials:black granite, Shanxi black, china ... of your questions, please fell free to contact me. welcome to your sample order.Contact skype:aliceluckystone various styles of granite ...