20+ years of manufacturing experience
International standards (JIS / DIN / AISI)
In-stock items & fast delivery
Custom manufacturing available
Who We Are
Gumao Precision is a professional manufacturer of standard mold components and precision mold accessories, serving the plastic injection molding industry since 1998.
We specialize in high-accuracy machining, stable quality control, and reliable delivery — helping customers build molds that perform consistently over long production cycles.
From design support to finished components, we focus on precision at every stage.
Products
Air Valves & Date Stamps
Precision mold identification and air control components designed for reliable venting, part release, and traceability. Manufactured for durability, accuracy, and consistent performance in high-cycle injection molds.
Coil Springs
High-quality mold springs engineered for stable load performance, long service life, and consistent force. Suitable for a wide range of mold applications requiring reliable compression and return action.
Core Pins
Precision-machined core pins manufactured to tight tolerances for accurate cavity formation. Designed for strength, wear resistance, and dimensional stability in demanding injection molding environments.
Ejector Pins
High-precision ejector pins designed for smooth, reliable part ejection and long mold life. Manufactured with excellent straightness, surface finish, and hardness consistency.
Services
Gumao Precision specializes in the manufacturing of standard mold components for plastic injection molds. Our product range includes ejector systems, guide components, slide and lifter parts, locking and positioning components, mold opening controllers, cooling components, and more.
All components are produced using advanced CNC machining and precision grinding to ensure tight tolerances, stable performance, and long service life. Products are manufactured in accordance with JIS, DIN, AISI, and other international standards.
Contact Us
Get in touch with Gumao Precision for product information, technical support, or quotations. We’re happy to assist with your mold component needs.