GP Mold leverages advanced mold manufacturing and high-tonnage injection molding capabilities to provide global companies with customized plastic parts solutions that are high-precision, high-strength, and highly consistent.

Precision, scalability and dependable quality for production and prototypes.
Tight tolerances and stable repeatability.
Rapid tooling and efficient scheduling.
ABS, PC, PP, PA, TPE and more.
Process control and full inspection.
Key messages paired with visuals to communicate capabilities.

GP Mold leverages high-precision machining centers and multi-dimensional inspection systems (CMM, 3D scanning, visual inspection, T1 mold trial data acquisition) to achieve consistent control of mold cavities, cores, micro-grooves (width ±0.01mm), ultra-thin walls (0.6mm), hollow weight-reducing structures, venting grooves, and parting lines. We have extensive processing experience in high-speed sewing thread spools, corrosion-resistant fishing reels, large cable winding reels, micro-medical tubing, and multi-color identification spool molds, ensuring stable mold tolerances, uniform wall thickness, and balanced melt filling, preventing air entrapment, burning, short shots, sink marks, warping, glass fiber exposure, and dynamic imbalance, thereby significantly improving validation speed and mass production yield.
GP Mold adopts a "one-project-one-solution" mold development strategy, providing precisely customized mold solutions based on customer product design, rotational dynamics requirements, environmental resistance standards, usage scenarios, and production capacity needs. Our engineering team is involved from the initial design stage, providing DFM optimization suggestions, focusing on rotational dynamics verification, creep prediction, and multi-material compatibility optimization of the gating system and multi-point hot runner design. We independently customize the mold structure, mold temperature control circuit, cooling plan, ejection design, and surface treatment solutions, ensuring stable scalability of the mold during both trial production and mass production.


GP Mold's mold material system and heat treatment solutions significantly enhance the durability of molds in spool product manufacturing scenarios. Through high-hardness, corrosion-resistant, and wear-resistant steel and advanced coating processes, the molds reliably withstand high-temperature cycles, seawater salt spray corrosion, millions of rotational fatigue cycles, and high-cycle mass production conditions, reducing common failure risks such as cavity corrosion, wear, cracking, and deformation. This helps customers achieve longer mold life (over 1 million pieces) and lower overall maintenance costs. Efficient Production:
We optimize molding cycles through CAE mold flow simulation (with a particular focus on dynamic balancing and environmental stress cracking prediction), hot runner system design, efficient mold temperature control engineering, and 3D printed conformal cooling circuit optimization, ensuring high-speed production capabilities on our clients' injection molding platforms. Through precise planning of gate location, venting systems, and cooling systems, we can shorten cooling times, improve part dimensional stability, reduce internal stress and scrap rates, thereby directly increasing customer productivity, lowering unit costs, and guaranteeing consistent mass production in the long term.


Based on the ISO 9001 certification system, GP Mold implements strict quality control and data recording at every stage, from raw material entry and mold processing to assembly, T1 mold trial verification, pilot production, and mass production. We conduct durability, filling, demolding, thermal stability, venting effect, and full-scale functional verification of the molds (including high-speed rotation tests at 15,000 rpm, temperature cycling from -40℃ to 120℃, 100,000 cycles of winding fatigue, and chemical solvent immersion resistance), ensuring that they meet global standards for spool products before formal delivery. We also support full-process traceability management of parts production and international logistics delivery capabilities.
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