Where can I find a handmade company in Shenzhen? The 3D design of products, the appearance, function and structure of products, the production of professional precision copying and fast CNC hand plate

Where can I find a handmade company in Shenzhen? The 3D design of products, the appearance, function and structure of products, the production of professional precision copying and fast CNC hand plates. There are many hand-made companies in many places in Shenzhen. There may not be so many in customs. Where is more prosperous? Where is the factory? There should be one outside the customs. Many factories are built outside the customs, and now there is no difference between the customs and the customs in Shenzhen. The hand-drawing and printing of Longgang Qiansu model are all done by hand.