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Overview

Manufacturing Overview

Advanced Thermal management and Manufacturing for High-Performance Electronics

At Renxin-Seiko Industry Co. Ltd., we specialize in advanced thermal solution design and precision manufacturing for demanding electronic applications. From concept development and thermal engineering to mass production and final assembly, we provide integrated manufacturing services that help global customers improve reliability, optimize thermal performance, and accelerate product deployment.

With a manufacturing facility covering 5,100 square meters, our operation is organized into dedicated thermal product manufacturing and sheet metal fabrication workshops, enabling efficient production control and consistent quality management across complex projects.

Engineering Capability

Engineering-Driven Manufacturing

Our team consists of 114 skilled employees, including:

  • 11 thermal and mechanical engineers
  • 14 quality management specialists
  • Experienced CNC machinists and production technicians

We combine engineering expertise with manufacturing execution to support customers throughout the entire product lifecycle — from DFM review and prototype validation to scalable mass production.

Our engineering-focused approach allows us to deliver not only manufactured components, but optimized thermal solutions tailored to real-world operating conditions.

Production Infrastructure

Advanced Manufacturing Capabilities

Our production infrastructure includes:

Precision Machining

  • 47 CNC machining centers
  • High-precision aluminum and copper machining
  • Complex heatsink and cold plate manufacturing
  • Prototype and medium-to-high volume production

Sheet Metal Fabrication

  • CNC laser cutting system
  • 3 CNC bending machines
  • Precision sheet metal forming and assembly

Thermal Product Manufacturing

  • Skived fin heatsinks
  • Extruded heatsinks
  • CNC machined heatsinks
  • Liquid cooling cold plates
  • Thermal module integration

Welding & Surface Finishing

  • Automated laser welding production line
  • Integrated surface treatment line
  • Silk printing and cosmetic finishing support

Assembly & Testing

  • Dedicated assembly production line
  • Functional inspection and quality verification
  • Reliability-focused production control

Applications

Industries We Serve

Our thermal and manufacturing solutions are widely used in:

  • EV charging systems (EVC chargers)
  • Energy storage systems
  • Solar inverters
  • Industrial power supplies
  • AI servers and data infrastructure
  • LED lighting systems

We understand the thermal, mechanical, and reliability requirements of mission-critical electronic applications and work closely with customers to develop manufacturable and cost-effective solutions.

Quality Management

Quality & Reliability Commitment

Quality is integrated into every stage of our manufacturing process.

From incoming material inspection to in-process quality control and final verification, our team maintains strict production standards to ensure product consistency and long-term reliability.

We continuously invest in manufacturing capability, process optimization, and engineering support to meet the evolving requirements of global industrial customers.

Stable Manufacturing. Reliable Partnership.

As a leading thermal solution manufacturer, our mission is to provide stable, reliable products and responsive engineering support to customers worldwide.

Whether supporting rapid prototyping or long-term production programs, we are committed to building trusted partnerships through engineering excellence, manufacturing precision, and dependable delivery performance.

Why Choose Us

Our Core Strengths

Thermal engineering + manufacturing integration
Precision CNC machining capability
Rapid prototype to mass production support
Reliable quality management system
Strong experience in power electronics thermal applications
Flexible customization and DFM support
Global customer collaboration experience