APPLICABLE INDUSTRY
Cheonan Headquarters
O.N Co., Ltd., established in 2006, is a precision machining and equipment manufacturing specialist with
business operations both domestically and internationally, centered at its headquarters in Cheonan.
We provide tailored services to meet customer needs across various industries, including semiconductors, displays, and
chemicals, offering expertise in synthetic resin processing, resin welding, polishing, fusion, and module equipment fabrication.
business operations both domestically and internationally, centered at its headquarters in Cheonan.
We provide tailored services to meet customer needs across various industries, including semiconductors, displays, and
chemicals, offering expertise in synthetic resin processing, resin welding, polishing, fusion, and module equipment fabrication.











Key Business Areas
01
Precision Machining (CNC / MCT / Turn-Mill / Multi-Axis)
- High-Precision Machining of Fluororesins (PTFE, etc.) and Various Resin Materials
- Capability to Handle Complex Shapes Using Multi-Axis (3–5 Axis) Equipment
- Full Process Support from Small Sample Runs to Mass Production
02
Hot Air Plastic Welding
- High-strength hot air resin welding suitable for industrial and electronic components.
- Expertise in welding complex resin materials and multi-shaped resin components.
03
Unit / Module Assembly
- After procuring machined, electrical, and outsourced parts, we assemble them into finished product units and handle all subsequent processes in sequence — quality inspection → packaging → shipment.
04
Customized Development for Customer Needs
- Capable of manufacturing based on drawings and participating in early-stage development
- Design and production of semiconductor and display process equipment
- Comprehensive execution from design adaptation to assembly and inspection according to customer requirements
Manufactured Products
- Plastic Processed Products
- Plastic Welded Products
- Precision Inspection
- LEAK TEST
- SUB Ass'y