APPLICABLE INDUSTRY
Asan Plant 2
O.N is not just a simple assembler—it is a Total Assembly Partner that delivers mechanical assembly,
productivity-focused operations, and tailored solutions for customers. We provide assembly services from units to
complete modules that fully reflect customer needs. Through our one-stop production system,
which integrates all processes in-house—from design, machining, mechanical/electrical assembly, reliability testing,
to inspection based on customer requirements—we supply high-quality, highly reliable assembled products on time.
productivity-focused operations, and tailored solutions for customers. We provide assembly services from units to
complete modules that fully reflect customer needs. Through our one-stop production system,
which integrates all processes in-house—from design, machining, mechanical/electrical assembly, reliability testing,
to inspection based on customer requirements—we supply high-quality, highly reliable assembled products on time.













Main Business Areas
01
Assembly Capable in Cleanroom Environment.
- Cleanroom compliant with Class 10,000 standards (approx. 2,310 m²)
- Prevents external contamination, controls static electricity, and maintains consistent temperature and humidity
- Ensures assembly precision through controlled environment
02
Precision Mechanical Assembly
- Perform complex assembly of multi-axis machined parts, mixed metal/plastic modules, and more High-precision assembly to meet strict dimensional tolerances and shape conformity
- Comprehensive in-house process from custom design to assembly and inspection, tailored to customer requirements
03
Module-Level Final Product Assembly
- BOM-based component configuration, assembly schedule management, reliability verification, and final shipment inspection
- Comprehensive management of all components, including in-house machined and outsourced parts
04
Hot Air/Plastic Welding-Based Assembly
- High-strength structural assembly possible using thermal fusion methods
- Non-contact high-temperature hot air technology minimizes damage to precision plastic products
Manufactured Products
- Unit Ass'y
- Performance Testing
- Precision Measurement