Our Service China First Part (ZXTech.HK) provides professional CNC Milling, Precision Engineering, Gear Machining, SLA & SLS (3D Printing), Vacuum Casting, Sheet Metal Forming, Machined Extrusion Parts, Silicone Rubber Keypads, Investment Casting, Rapid Injection Moulding and Die Casting services.. She uses many different rapid prototyping processes, each with specific materials and techniques to achieve a desired result. They will guide you through the best prototyping options to suit your project, end use and budget