Your trusted partner in tooling, molding, and contract manufacturing.

Your Partner in Advanced Manufacturing

Your trusted partner in tooling, molding, and contract manufacturing.

Your Partner in Advanced Manufacturing
weilan-mfg
What began with 5 injection molding machines dedicated to small-batch, high-precision components has grown into more than 107 million components and products manufactured for our customers to date. The Weilan team remains committed to precision manufacturing, reliable delivery, and being the most trusted partner for brands worldwide.
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Contract Manufacturing
Flexible, Efficient, One-stop Manufacturing for a complete end-to-end service.
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Plastic Injection & Medical Solutions
High-precision molding with certified cleanroom production for medical and high-performance applications.
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Mold Manufacturing
With over 15 years of international mold making experience, our team delivers precise, reliable molds that keep your production running smoothly.
Our Values, Our Commitment
Honest and Reliable

We uphold respect, transparency, and equality in every collaboration, ensuring long-term trust and meaningful partnerships.

“Big Enough To Cope, Small Enough To Care.”

About Us
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weilan-mfg
Engineering
From concept to production, we deliver integrated engineering across product design, electronics, PCBA, tooling, automation, and rapid prototyping, making every project faster, more stable, and ready for market.
Product Design
End-to-end product design focused on functionality, manufacturability, and user experience.
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Electronics & Software
Integrated hardware and embedded software engineering to build stable, high-performance smart products.
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PCBA Design
Professional PCB layout and PCBA engineering ensuring signal integrity, durability, and manufacturing reliability.
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Moldflow Simulation
Advanced mold flow analysis to optimize part design, prevent defects, and ensure predictable mass production.
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Mold Design
High-precision mould design built to global standards for consistency, durability, and long-term performance.
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3D Printing & Prototyping
Rapid prototyping with 3D printing to validate structure, assembly, and functionality early in development.
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Automation Design
Custom automation solutions engineered to boost production efficiency, accuracy, and manufacturing stability.
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Innovation Driven · Technically Proven

weilan-mfg

We continually explore new materials, digital tools, and AI-assisted methods that improve product quality and production efficiency. We adopt new technologies at our own steady pace, ensuring every upgrade is stable, reliable, and ready for real manufacturing. For us, innovation means practical improvements and smarter workflows that bring real value to every project.

Sustainable Manufacturing • Responsible Practices

From energy efficiency to eco-friendly materials, we minimize environmental impact while delivering high-quality solutions.
Serving Brands Worldwide

We support global customers with reliable manufacturing, fast response, and consistently high quality throughout every project.

15+

Established in 2011

1300+

Team members

340+

Precision equipments

weilan-mfg

Blog posts

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Engineers in a design office review computer screens together while working on mold simulation and manufacturing analysis tasks for production.

Moldflow Simulation Explained: From Product Design to Mass Production

Stop injection molding defects before steel cutting. Moldflow simulation models plastic behavior to optimize wall thickness and eliminate warpage.

Jun 4, 2026
Rows of clean white injection molding machines line a bright factory floor with overhead cranes and organized production equipment nearby.

A Complete Guide to Overmolding

Achieve permanent material bonding without adhesives. Master overmolding design rules, wall thickness, and mechanical locks for defect-free production.

Jun 4, 2026
Precision injection mold components with hydraulic hoses in industrial machinery

Blow Molding vs. Injection Molding: Key Differences Explained

Make the right choice: blow molding vs injection molding compared for tooling cost, part geometry, and production speed. A practical checklist for engineers.

May 31, 2026