... 1. Place of Origin: Shandong, Dongying (mainland), 2. Brand Name: Highyond Casting3. Standard or OEM: ... 2 grams to 100 kg9. Surface: Blasting, turning, milling, grinding, polishing, black oxide, phosphate.Zinc plating.10. Heat treatment: solution ... , anneal, temper, normalize, quench, hardening+temper. Advantage: 1) high quality control system 2) ISO9001 ... thanks! precision casting key