Product descriptions from the supplier CUSTOM MOLD FOR YOUR PRODUCT For plastic caps and closures, we provide high-precision injection molding solutions designed for stable production, consistent quality and high efficiency. Send Us Your Bottle Sample or Drawing for a Custom Solution. About mould material: - Steel S50C#: Basic material for blowing moulds, competitive price - Steel P20#: Common blow molding mould material, medium quality - 2316 stainless steel: High quality