... step:size(cm): 110-150X30-33X2/3 100X35X15description: surface polished/honed/, others sawn ,or according to client's ... Quality Control Of Chinese G603 Granite Staircase: A. Polished degree: 85° up, according to your request;B. Thickness tolerance:+/-1mm, ... , checked piece by piece, Chinese G603 Granite Staircase(high polished, bullnose edge): 4:Packing Details:Seaworthy fumigated wooden crates ...