Which companies do you partner with for material and parts?

Since we always do custom productions, the customers will made the design and selections of material and parts for us. Pls check below, hope these comments and links can give a guide for your selections. But most all these parts need to be selected based on the glasses style design needs. 1) Lens: Nylon, polarized, CR39, CR39 with polarized and Nylon with polarized. 2) Frames: Acetate, TR90, metal including stainless steel, copper, memory, titanium and ect. 3) Supplier of Acetate: JIMEI & Mazzucchelli You can select colors from Website: http://www.jimei123.com/; Website: https://www.mazzucchelli1849.it/ 4) Nose pad: Silicon,titanium and ceramics. 5) Hinge: VISCOTTA OREPLUS SPING HINGE; OBE HINGE. 6) Screw: Any non-slip screw is ok