I am looking for a long term supplier who can make precision machined components with tight tolerances. Parts have to be machined in your CNC Machines and checked with our Quality Control equipment. We have not had good luck with trading companies (i.e the companies who don't manufacture in house but purchase the parts from others). Hence we would strongly prefer companies that manufacture in house. we are looking for CNC Machining companies with Swiss Type Screw Machines. Multiple parts needed. Order quantity will vary between 25,000 to 200,000 pcs.