1)Wet polishing pads 2)This 3mm thick pad is our most popular pad, 3)Available in 3, 4 and 5" diameter 4)Excellent for granite, engineered stone and concreteCan you supply samples for test? Yes, we can, clients need to pay for freight What are the payment term and delivery time? usually we can arrange delivery within 15-30 days after receipt of the order, for customized products, the delivery time will be agreed by the seller and the buyer. Does your company accept custom-made? Surely, we accept it. Any new products you want us to produce for you, just send us your drawing or sample, we will produce the same one. We will not sell this kind of products to other customers only if we get your permission. What we should do if your products don't work well? If our products don't work well, please check the installation is right or not. Then check is there something wrong with your grinder equipment. Also, please confirm your workers operate in right method. If you confirm everything is ok in your side, please contact us immediately, we will pay much attention and solve your problem asap. How could we know the quality, if we want to order your products? Please just test them with a very small order, then you will know the quality. At present, so many people in the world to use Chinese products, because of the high quality and most competitive prices. We are professional manufacturer in supplying diamond tools for more than 20 years. Anyway, confirming our products quality, a small trial order for testing will be necessary.