Dongguan Guying Hardware Co., Ltd,which is mainly do the CNC and 3d printing service.We have 11 years' experience.We have many advantages:1. Material: We use the Top A quality material level mate including the Physical, chemical, corrosion resistance, mechanics, processing properties and etc. And we can attach the material report and material inspection report2. Tolerance: For tolerances, we are strictly in PDF. And w.We also can provide the QC Reports.3.Product surface:For the product finish, we can provide the surface finish test report after the production of the product using professional machines.4.Machine:The machine brand we use is Mazak5.Engineers team:Our prices are calculated by a professional engineer team.If you need a professional partner, please let us know.