Ming-Li Precision Steel Molds Co., Ltd., headquartered in Taichung, Taiwan, stands among the world’s top three manufacturers of Power Module Housings—and is recognized as Taiwan’s #1 in this specialized field. With decades of experience in precision mold development, high-tolerance injection molding, insert-molding of embedded components, and full automation integration, Ming-Li delivers advanced engineering solutions for demanding applications such as EV inverters, industrial power electronics, renewable-energy converters, and high-end servos.

---

Precision Mold & Housing Manufacturing Capabilities

Ultra-High Accuracy Mold Design and Fabrication

Ming-Li’s mold workshop is equipped with ultra-precision CNC milling machines achieving tolerances down to ±1 µm. Core equipment includes YASDA ultra-precision mills, +GF+ AgieCharmilles EDM / wire-cut systems, SCHAUBLIN precision turning / grinding, and OKAMOTO CNC surface grinders.
Why it matters: Power module housings often require extremely tight fits between plastic, metal busbars, terminals, and silicon-steel sheets; any dimensional deviation can cause insulation breakdown, impedance drift, or premature failure.

Insert Molding & Embedded Component Integration

We specialize in insert-molding of complex metal and laminated components—copper busbars, thick-film copper rails, silicon-steel sheets, molded terminals—all directly overmolded with high-performance engineering plastics (PBT GF30, PPS, PA9T, LCP, PEEK). Core processes include:

• Precise nest design and shut-off to avoid sink marks and flash.

• 2-shot or sequential-injection options for hybrid material structures (e.g., rigid plastic + elastomeric seal).

• Robotic transfer, automatic insert placement, and inline vision verification.

Advanced Material & Thermal Management

Power module housings demand excellent thermal conductivity, mechanical strength, electrical insulation, and dimensional stability under high temperature and harsh environments. Ming-Li handles:

• High-temperature plastics such as PPS (260 °C continuous), PA9T, and PEEK (350 °C).

• Thermal-enhanced compounds (graphite, aluminum nitride filled).

• Moldflow and 3D simulation to optimise rib structures, wall-thickness, gate locations, cooling channels, and warpage behaviour.

Automated Assembly, Testing & Quality Assurance

Beyond molding, Ming-Li provides full automation integration:

• Feeding systems, robot pick-and-place, vision inspection (AOI), leak/pressure test stations, final packing lines.

• 100 % micro-CT inspection (ZEISS METROTOM 6) for internal voids, bonding integrity, embedded component alignment.

• Statistical process control (SPC), process capability indexes (CPK ≥ 1.67), full traceability via laser-marking and QR codes.

• Quality management per IATF 16949 standard—typically expected by high-reliability power-electronics OEMs.

---

Global Reach, Taiwan Leadership

With a 15,000 m² facility in Taichung and a team of 110 skilled engineers and technicians, Ming-Li supports global OEMs across Europe, the United States, and Asia. To date, the company has manufactured more than 5,000 precision molds and completed over 100 projects for power-module housings. Their continuous investment in automation, clean-room processes, and engineering resources makes them a strategic manufacturing partner for high-volume, high-complexity applications.

---

Who Else is in the Top Tier? (Brief Overview)

SEMIKRON Danfoss (Denmark/Germany): A global expert in power module platforms (e.g., SEMITOP®), providing standardized housing systems for automotive and industrial converters.
Vincotech (Germany): A longtime supplier of power module housings and packaging solutions, with a broad portfolio covering industrial drives, solar inverters, welding systems and e-mobility.

Together with Ming-Li, these three companies represent the elite tier of power module housing manufacturers worldwide.

---

Why Choose Ming-Li as Your Manufacturing Partner?

• Proven track record of delivering high-volume, high-precision power-module housings under demanding technical requirements.

• In-house tooling, molding, insert-molding and automation under one roof – reducing coordination risk and lead time.

• Commitment to quality, traceability and manufacturing excellence backed by IATF 16949 certified systems.

• Taiwan-based production hub in Asia, offering geographic advantages for Asian OEMs and global supply chains alike.

Ming-Li is more than a supplier—it is your strategic manufacturing partner for the high-performance power-electronics era.