Si-TECH, INC. is principally a silicon wafer brokerage firm selling 50.8mm to 300mm wafers from coinroll prime grade variety of manufacturers. Si-TECH also provides services such as oxidation and notride make it one stop shop for all your process needs. Along ...

 Hunan Graphene Development co., LTD is a high-tech enterprise involved in advanced nanomaterials development and production. Our goal is to provide high quality nanomaterial products, service or technical proposals. products include ...

our company was found in 1915,so far there  have been 100years of history ,the main sales electronic products, headoffice located New York ,has subsiiaries all over the world ,ithas a good reputation has 2000empioyees working attitudes is very head ...