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There are so many companies produce plastic injection chair molds all over the world. SINO is one of the manufacturers and specialized plastic injection molding chairs. arm chairs, armless chair, gas assistant chair moulds and etc. How is SINO chair moulds: 1. Good plastic chair mold design, SINO has a strong team and they have rich experience in designing the chair moulds. They are mould design is the most important step for manufacture a good plastic chair mold, reasonable mould structure, the suitable ejector system, injection system, cooling system, air venting system, guide system. 2. SINO will choose the suitable steel, DIN1.2738 is very good steel for chair mold, and if customer have wanna use P20, also ok. 3.SINO Choose the best suitable tooling technical, Using big CNC milling tooling machine and mould press machine. 4. Mould assembling, the chair mold assembling must be very carefully, check connect of every mould plate; ejector pin, stripper, eject block or slider should move smooth. 5. Good technician manual polishing or plus hard chrome plating keep the chair long time lasting shine. For more about SINO chair moulds, pls feel free to contact me.

choose the correct steel for mould base and mould main steel. For example, if you need to make a 4 cavities crate mould, then you need to make to use a pre-hardened steel with HRC bigger then 33 for mould base. You have to choose the correct steel or material for the durable mould components. make the correct harden treatment to each steel piece and make the steel hardness controlled, you can not make it too hard. the moving area or guiding system of crate mould must be very precise machining processed. Any hand working on it is not acceptable. 

During 11 years of SINO team's creating, in the starting of SINO MOULD, we got to know that the workmanship is the most important at that time, and we know the workers who are dealing with air conditioner moulds or other home appliance moulds, we trust that their quality mentality will be better then the people who are dealing with motor cycle moulds...from that time, our HR department choosed the people who came to SINO. Most of our top managers and designers were dealed with air conditioner moulds or other home appliance moulds, untill now we have made many air conditioner moulds, such like air conditioner housing moulds, air conditioner mask moulds, air conditioner fan mould, air conditioner grille moulds...for the grile and mask moulds, we use DIN 1. 2316 tempering steel for cavities long lasting polishing and DIN 1. 2738 for the core side.

Mold making is an ancient industry and there are many signs and artifacts that indicate how the system of mold making was widely prevalent among ancient Egyptians, Mesopotamians, Europeans as well as Asians. Even today the mold making is regarded as one of the leading industrial sectors. In fact, mold making can be seen as a universal tool making business that would never go out of demand.

Mold making is an ancient industry and there are many signs and artifacts that indicate how the system of mold making was widely prevalent among ancient Egyptians, Mesopotamians, Europeans as well as Asians. Even today the mold making is regarded as one of the leading industrial sectors. In fact, mold making can be seen as a universal tool making business that would never go out of demand.