Custom Plastic Injection Molding – Best Plastic Injection Mold Maker in China

Holly – your expert partner in plastic injection molding solutions from China! With over 20 years of manufacturing experience, Holly specializes in producing precision-molded plastic parts for a wide range of industries, including automotive, home appliances, medical devices, industrial controls, and consumer electronics.

At Holly, we offer fully integrated services from mold design to mass production. Our team is capable of producing over 500,000 high-precision plastic parts per month, supported by advanced injection machines and in-house mold-making capabilities. Whether you’re developing intricate electronic housings or heavy-duty functional components, we deliver tight tolerances, dimensional stability, and long-term performance.

Custom Mold Solutions: From rapid prototyping to high-volume production, our experienced engineers provide design-for-manufacturing consultations, mold flow analysis, and efficient tooling development. Holly also supports family mold structures to reduce tooling costs and improve productivity, making us a reliable partner in the China family injection mold wholesale market.

Material Expertise: We process a broad spectrum of engineering thermoplastics, including ABS, PC, PP, POM, PA, and high-performance materials like PEEK. As a professional plastic injection mold maker in China, our deep understanding of material behavior and application-specific requirements, ensuring that every part meets strict mechanical, thermal, and aesthetic standards.

Our facilities include 40+ injection molding machines ranging from 80 to 1000 tons, along with a dedicated in-house mold workshop for custom tooling and maintenance. With quick turnaround on tooling—typically 7–10 days for samples—and fast, stable production cycles, we ensure speed without compromising quality. Our ISO 9001-certified quality control system guarantees consistency in every batch.

Having served over 500 clients globally, Holly is recognized for its customer-first approach, production reliability, and technical depth. Whether you’re a startup or an established OEM, we are ready to support your project with high-quality injection molding solutions and competitive mold sourcing options from China.

Reviews from Our Plastic Injection Molding

Holly has consistently exceeded our expectations. We ordered 30,000 molded enclosures for our home appliance line, and every piece arrived flawless. The lead time was only 12 days, and their team was incredibly responsive throughout the process.

Daniel Kruger

We needed a reliable partner for small-batch prototyping and were surprised by Holly’s speed and quality. The team delivered high-precision nylon parts with tight tolerances in under 10 days. Great communication and attention to detail!

Maria Fernandez

I’ve worked with suppliers from different countries, but Holly stands out for its consistency and quality control. Their use of family molds helped us reduce tooling costs by 25% without sacrificing product performance.

Kenji Yamamoto

Holly delivered our 15,000-unit ABS part order on time, with 0.1% scrap rate. Their in-house mold making was fast, and their understanding of injection pressure and flow behavior really impressed our engineers.

Olivia Bianchi

I appreciated how Holly’s engineering team got involved early in the design phase. They caught potential sink mark issues and suggested a much better gate design. You don’t just get a vendor here—you get a solution provider.

Raymond Patel

Our company ordered multi-cavity molds for automotive interior clips, and Holly handled it professionally from day one. The quality matched what we used to get from our German supplier but at a significantly lower cost.

Sophie Becker

We came across Holly while searching for China family injection mold wholesale options. They delivered beyond our expectations—smart layout, cost-effective tooling, and excellent project management.

Jason Liu

The PEEK components we sourced from Holly needed to handle extreme temperatures and chemical exposure. The result was spot on—dimensionally stable and smooth surface finish. They are now our go-to supplier for engineering-grade resins.

Eliza Morgan

We started with a trial run of 1,000 PC parts and quickly scaled up after seeing Holly’s production stability. Their process control is solid, and the shipment arrived well-packaged and on schedule.

Laurent Dubois

Holly isn’t just another injection molding supplier—they act like an extension of our team. From CAD adjustments to shipping logistics, they supported every stage of the project. Truly top-tier service.

Ali Osman