we work in the design and development die casting parts , we could have the best status of die casting products at the first mold trial. After first die casting mold samples, we will analysis your products issue base on your requirement, measure all of dimensions according to 2D drawing and improve the die castings issue or part design issue to meet your requirement, during this time we will trial the die casting mold and send you the new casting samples from time to time until you 100% satisfied.