TDC is a manufacturing company, and our core competence is super precision manufacturing. TDC's unique polishing/lapping tech ... nology achieves ultra-fine specifications, that can be applied even to metals whose roughness is under Ra1 nanometer. Sub-micron level super fine flatness, parallelism, and size tolerance can also be achieved with our expertise, and those multiple requirements are compatible. We process a wide variety of materials such as metals, ceramics, glasses, semiconductor materials, etc. read more