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.
Weilan MFGWeilan MFG
Contract Manufacturing
Flexible, Efficient, One-stop Manufacturing for a complete end-to-end service.
Weilan MFGWeilan MFG
Plastic Injection & Medical Solutions
High-precision molding with certified cleanroom production for medical and high-performance applications.
Weilan MFGWeilan MFG
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
Weilan MFG Weilan MFG
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.
Weilan MFG
Electronics & Software
Integrated hardware and embedded software engineering to build stable, high-performance smart products.
Weilan MFG
PCBA Design
Professional PCB layout and PCBA engineering ensuring signal integrity, durability, and manufacturing reliability.
Weilan MFG
Moldflow Simulation
Advanced mold flow analysis to optimize part design, prevent defects, and ensure predictable mass production.
Weilan MFG
Mold Design
High-precision mould design built to global standards for consistency, durability, and long-term performance.
Weilan MFG
3D Printing & Prototyping
Rapid prototyping with 3D printing to validate structure, assembly, and functionality early in development.
Weilan MFG
Automation Design
Custom automation solutions engineered to boost production efficiency, accuracy, and manufacturing stability.
Weilan MFG

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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BlogSteel injection mold with brass slide-core inserts, part numbers engraved, and lifting eye bolts.

Custom Plastic Mold: How Shut-Off Surfaces Control Flash Around Openings and Undercuts

In custom plastic molds, shut-off surfaces block plastic flow to form openings and undercuts — and draft, steel support, and venting keep flash in check.

Oct 9, 2026
BlogTechnician inspecting and adjusting a metal injection mold in a manufacturing workshop

Injection Mold Tooling: How Parting Line Decisions Affect Flash, Appearance, and Assembly Fit

Before the mold is cut, tell your factory which faces are cosmetic, sealing, or mating—misplaced parting lines cause flash that breaks fit.

Oct 9, 2026
BlogBlack injection-molded ring parts with toothed inner openings stacked on a blue surface

How Gate Location Shapes Filling, Appearance, and Part Strength in Plastic Injection Mold Design

Gate location governs cavity fill, weld line placement, and gate vestige on cosmetic or sealing surfaces, so it should be reviewed before steel is cut.

Sep 20, 2026