1.Manufacturing about Three ways connector & Small medical parts , conform to HASCO standard，apply gas-assistance technology to ensure surface and dimension of production and adopt to many structures and high precision mold,and use mold flow analysis technology, hot runner technology to ensure quality of plastic products. 2.Each design result must be analyzed and discussed through (plastic and steel) material, machining, part assembly, test, pre-production, volume production etc. During the design, need to verify the reasonable material using, the manufacturability for each mold component. reliable assembly and the feasibility of the mold tryout, to meet each condition of mass production as well.