... both hot runner and cold runner are available) types.3. The common mold steel we use are NAK80, ... mold making.8. Lead-time, prototype mold in 3-7days, production mold in 1-2weeks, complicated rubber ... shore A, for some special products, we can reach ±3 shore A toleranceColor: for rubber, usually black, for ... some automotive rubber moldsSmall orders are welcomed Custom molded silicone rubber parts-A440