Chair mould 1 Good plastic chair mould design. mould design is the most important step for manufacture a good plastic chair mould, reasonable mould structure, the suitable ejector system, injection system, cooling system, air venting system. 2 Choose the suitable steel, DIN1.2738 is very good steel for chair mould,but because of steel cost,customer use steel P20 for chair mould. 3. Choose the best suitable tooling technical, Using big CNC milling tooling machine and mould press machine. 4. Mould assembling, the chair mould assembling must be very carefully, check connect of every mould plate; ejector pin, stripper, eject block or slider should move smooth. 5. Good technichian manual polishing or plus hard chrome plating keep the chair mould long time lasting shine. www.jmtmould.com