Design & 3D modeling of TPU phone case

Looking for the right match for ongoing freelance product design work. We really want someone based in China who speaks fluent Chinese and English. Someone with a creative design mind, who understands the balance of aesthetic, ergonomics/functionality, engineering, and ease/cost of manufacturing. Someone capable of working through design and prototype iterations to create an outstanding product. Must be proficient with CAD modeling. Must be effective at working remotely [Removed by Freelancer.com Admin for offsiting - please see Section 13 of our Terms and Conditions], screen sharing, filesharing, etc. Must have the skillfulness to communicate all of the design details and the persistence to explore and work through challenges with manufacturers. Ideally we want someone experienced with a variety of materials and fabrication processes that relate to consumer products. Top of the list is plastic injection molding. We also want to do silicone overmolding. Another thing we need help with is sourcing and vetting factories. If you already have a trusted supplier list, that would be great. The first project we are hiring for is a TPU phone case. The design is basically complete for iPhone 7 (aside from a few minor tweaks). It was created in Rhino CAD. Our goal is to adapt the same design to 9 other phone models. Some design and engineering choices will need to be made along the way. Some we can decide together upfront. Others we can try a few versions until we find what we like. We are offering $150 for Samsung and iPhone 5 adaptations, and $100 dollars for iPhone 6/6+/7+. We need the 3-D file and some cross-sections detailing critical dimensions. Warning, there are some challenging curves around the buttons. Since we need 9 drawings we will probably choose several freelancers to work with, and then choose the one(s) we want to continue working with based on the experience.