... vaccum brazed diamond tools,special design&size available. Back Up Pads (Flexible/Rigid/ Alumium)Different kind of vaccum brazed ... & Exp. Co., Ltd. is specialized in researching, designing and manufacturing various type of diamond tools. Our cutting, grinding/polishing ... Bits, Cup Wheels, crack chaser and tuck point blade, Router Bits & Profiles, Flexible Polishing Pads, Silicon Carbide Wheels, TCT ...