1. polished tiles 2. technical methods sizes: 600x600mm,800x800mm size tolerance: within 0.3mm water absorption: <0.5% bending: <=0.5mm(600x600mm) squareness: <0.1mm straightness: <0.2mm 3. inspection team helps control the quality(quality control services), free of charge. 4. Ivory White is one of the basic products. it will be never out of time. however, as shown in the attached pictures, there are many kinds of Ivory White, there are pink, grey, or white. one of main business of Canton Development is to help clients to get the best products with most competitive prices. to achieve this target, Canton Development has to collect different samples from many factories and compare them together. another main business of Canton Development is to provide quality control services so that the quality would be guaranteed. pictures 4, the second one from right is the whitest. picture 3, the differences are very obvious. picture 2, the left hand is whiter. picture 1 the left one is whiter.