In order to understand and meet your requirements correctly, please send us detailed information as follows:
1. Complete drawings of castings and finished parts. And indicate the requirements about materials, tolerance, machined surface, surface roughness, machining or measuring datum, heat treatment, surface finishing, etc.
2. Indicating Critical dimensions and important surfaces, the surplus quality requirements would cost more.
3. Inspection and test required, inspection documents required.
4. The mass of casting, purchase volume of each order and one year.
5. Requirements about packing, delivery and payment.