HWPD provides a full spectrum of plastic injection mold solutions — from low-cost prototype injection molds for early-stage R&D validation through to high-precision production molds engineered for long-run mass manufacturing. Rather than applying a one-size-fits-all approach, we assess each client's specific development stage and production goals, then recommend the mold type that best balances performance, lead time, and cost.
Prototype Injection Molds | Bridge / Rapid Production Molds | Mass Production Molds |
Automotive Part Molds | Medical & Precision Molds | Overmolding & Two-Shot Molds |
Choosing the Right Mold for Your Stage
The most cost-effective mold decision depends on where your product sits in its development and commercial lifecycle. We guide clients through this choice at the start of every project:
R&D & Design Validation Prototype Injection Mold Low-cost, fast-turnaround tooling to verify part design, resin flowability, and injection stability before committing to full production tooling. Ideal when design changes are still expected. | Market Validation & Pre-Production Rapid Production Mold A step up from prototype tooling — suitable for small-batch market launches where sample quality, production speed, and cost control all need to be balanced simultaneously. | Mass Production Standard Production Mold Hardened-steel, high-precision tooling engineered for long service life, tight dimensional consistency, and efficient high-volume output to meet sustained commercial supply demands. |
Prototype Injection Molds
For new product development, the prototype injection mold is the most reliable way to evaluate a design using real production-grade plastic materials and the actual injection molding process — before investing in full production tooling. Our prototype molds are built to the same precision standard as our regular molds, giving clients an accurate read on part performance, fit, and finish at a fraction of the cost and lead time.
Because our prototype mold accuracy matches that of a regular production mold, clients can also use the same tooling to launch an initial small batch to market — gathering real customer feedback while the production mold is being built in parallel.
Many clients start with a prototype injection mold to resolve design and material issues early, then ask us to upgrade or convert the prototype mold directly into the production mold — maximising their initial tooling investment and compressing the overall development timeline. |
Our prototype mold expertise is particularly strong in high-precision structural components for the automotive, medical device, and communication equipment sectors. Long-term clients in this area include Panasonic, Honda, Toyota, and BMW.
10–15 day average lead time | Low tooling cost | Production-equivalent accuracy |
Real production-grade plastic materials | Design & material risk reduction | Upgradeable to production mold |
Small-batch production capable |
▸ Verification of plastic part design — geometry, wall thickness, draft angles
▸ Verification of mold design — gate location, parting line, ejection, and cooling
▸ Verification of resin flowability — fill pattern, weld lines, sink marks
▸ Verification of part function and structural strength under real operating loads
▸ Rapid market launch of new products at significantly reduced lead time and cost
Plastic Production Injection Molds
As a leading medium-to-large professional injection mold manufacturer in China with over 20 years of experience, HWPD designs and builds high-precision production injection molds for the automotive, medical device, communication equipment, and industrial machinery sectors. Our facility is equipped with MIKRON CNC machining centres, precision milling machines, mirror EDM, and wire-cut machines, operated by engineers with an average of over 7 years of mold manufacturing experience.
Mold Design Sound mold design is the single most effective way to prevent production quality problems before they occur. With over 20 years in the manufacturing industry, we have a detailed understanding of the failure modes that arise from poor tooling decisions — and we design them out from the start. Our DFM process produces the most cost-effective and production-safe mold design for every project. We accept all major 3D CAD formats for mold design input: ▸ SolidWorks, UG / NX, Pro/E, CATIA ▸ STEP, SAT, IGES neutral formats ▸ AutoCAD 2D reference drawings |
Precision two-part plastic shell mold design with DFM review |
Multi-cavity production injection mold set — NAK80 steel, cold runner | Mold Fabrication Our mold fabrication shop combines high-precision CNC and EDM equipment with skilled toolmakers who have deep experience in complex structural molds. We consistently hold tolerances of 0.01–0.03 mm on critical dimensions and build molds rated for up to 1,000,000 shots. ▸ MIKRON CNC machining centres for high-speed cavity machining ▸ Mirror EDM for fine surface detail and deep rib features ▸ Wire-cut EDM for precision inserts and slides ▸ Surface grinding for flat mold base and parting surfaces ▸ In-house CMM dimensional verification and mold trial reporting |
Production Injection Mold — Standard Specifications | ||
Mold Capabilities | Mold Types | Common Mold Steels |
• Max Mold Size: 1,500 × 1,500 mm • Mold Life: Up to 1,000,000 shots • Critical Tolerance: 0.01–0.03 mm • Cavities: Single to multi-cavity • Runner: Hot runner / Cold runner • Design Software: UG, Pro/E, AutoCAD | • 3-plate molds • Overmolds (2-material) • Two-shot (2K) injection molds • Insert molds • IMD / IML molds • Hot runner molds | • #718 — Pre-hardened P20 grade • NAK80 — High-polish structural • S136 — Corrosion-resistant • H13 — High-temperature tooling • German & Japanese imported grades |
HWPD CNC and EDM machining workshop — clean-room environment |
Precision grinding and EDM workshop for high-tolerance mold components |
Plastic Materials for Injection Molding
We work with the full range of engineering and commodity plastics used in automotive, medical, and consumer applications:
PA (Nylon) | PC | PP | PE | ABS | POM | PVC | PS |
PMMA | TPE | TPU | TPV | TPR | ASA | PC+ABS | PA+GF |
Mold Applications by Industry
Our mold manufacturing capabilities span a broad range of industries and part types. Key application areas include:
Automotive — Exterior Bumpers, grilles, fenders, wheel arches, door handles, rearview mirror housings, rain gutters, automotive lamps | Automotive — Interior Door panels, A/B/C pillars, instrument panels, glove boxes, centre consoles, trim components | Engine & HVAC Intake manifolds, air filter housings, fuel rails, cylinder head covers, heating and cooling system components |
Medical Devices Instrument housings, diagnostic equipment enclosures, precision medical device structural components | Communication & Electronics Precision structural shells, equipment enclosures, connectors, and internal structural components | Industrial & Consumer Industrial machinery covers, floor cleaner housings, smart device enclosures, OA equipment parts |
Trusted by Global Automotive Manufacturers
In the automotive sector, HWPD has maintained long-term tooling partnerships with world-renowned OEMs and Tier 1 suppliers for over 20 years. Our automotive injection molds are engineered to the most demanding dimensional and surface quality standards in the industry.
Volvo | BMW | Mercedes-Benz |
General Motors | Ford | Volkswagen |
Nissan | Honda | Toyota |
Panasonic |
Component Category | Typical Parts We Mold |
Exterior Components | Bumpers & peripherals, front grilles, fenders, wheel arches, door handles, rearview mirror housings, automotive lamps, rain gutters |
Interior Components | Door panels, A/B/C pillars, instrument panels, glove boxes, centre consoles, overhead consoles |
Engine Peripherals | Intake manifolds, air filter housings, fuel rails, cylinder head covers, engine bay covers |
HVAC Systems | Heating and cooling ducts, blend door housings, evaporator covers, fluid circuit components |
