
WHYPROFIT DAY
Trusted OEM Manufacturing for Japanese Industry Since 1995
- 30+ Years
- Hong Kong HQ
- Made in China
- Japanese OEM

30+
Years
Industrial Manufacturing
Established in Hong Kong in 1995, PROFIT DAY's Dong Fu factory began production in 1996. For more than three decades, we have supported Japanese industrial customers through OEM manufacturing, precision FRP production, and custom steel fabrication.

Built forJapanese Standards
- OEM Manufacturing
- Custom Engineering
- Drawing Review
- Strict Quality Control
100% Japanese Customers
Integrated Manufacturing
- FRP
- Steel
- Assembly
- Inspection
One Factory One Team

Engineering Support
- Drawing Review
- Prototype Support
- Dimensional Inspection
- OEM Consultation

Every ProductInspected
- Pre-shipment inspection on every order.
- Quality built into each process.
- Traceability from raw material to dispatch.

Steel Fabrication
- Steel
- Laser
- Welding
- Assembly
Integrated steel cutting, welding and assembly for cooling tower structures, grease trap components and custom OEM steel parts.

OEM Capability
Custom mold manufacturing and repeatable OEM production — from first article to volume supply under one quality system.
Factory