Frame Production | Complete Vehicle Matching | OEM Export

Electric Tricycle Custom Manufacturing

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Mass Production | OEM & ODM

E‑Bike Frame & Vehicle Customization

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Industry Development Drivers

Innovation

Driven by consumption upgrading, two‑wheeler and tricycle EV upgrades fuel the growth of electric vehicle frame market.

Convenience & Environmental Protection

Low‑carbon and cost‑effective for short‑distance travel, creating great market potential for electric vehicle frames.

Public Demand

Delivery services, patrol, scenic spots & shared mobility

Export

E‑bikes feature low‑carbon emission reduction, easy portability and high travel efficiency.

About Us

Founded in 2011, Tianjin Haojun Electric Bicycle Co., Ltd. is situated in Dagang Zhongtang (East) Industrial Park, Tianjin. Our factory covers 50 mu with complete workshops and warehouses, benefiting from convenient transport and local industrial advantages.
We specialize in R&D and manufacturing of electric two‑wheeler and tricycle frames.
- Two‑wheeler frames: 4 manual 6 automatic lines, 1.5 million units yearly
- Tricycle frames: 4 manual 4 automatic lines, 500,000 units yearly
We have over 150 staff, an independent R&D team and professional QC department. With robotic welding equipment, precision testing tools and ISO9001 certification, we supply well‑known EV brands.
Following quality‑first and customer‑oriented values, we deliver reliable, cost‑effective frames for global buyers. OEM & ODM are available.

1. Business Scope
1. Blank processing and welding of iron parts for two‑wheeled & three‑wheeled electric vehicle frames
2. Blank processing and welding of bicycle frame iron parts
3. Blank processing and welding of fitness equipment iron parts
4. Supporting supply of electric vehicle frames and plastic parts
2. Complete Production Process
1. Frame Material Preparation
Adopt laser pipe cutting machine for blanking, pipe bending, flattening, arc punching, code engraving and drilling.
2. Frame Welding
To cut labor costs, the company is equipped with fully‑automatic welding lines operated by Panasonic robotic arms for whole‑frame welding. Manual welding lines are also available to guarantee production capacity.
3. Finished Frame Inspection & Storage
Finished frames are fully inspected and polished by professional staff. Qualified products are packed into turnover frames and stored in the finished‑goods warehouse.

# ISO9001 Quality Management System Certification

Tianjin Haojun Vehicle Industry Co., Ltd. has obtained ISO9001:2015 Quality Management System Certification, complying with the standard GB/T19001‑2016 / ISO9001:2015.

Certification scope: Processing of electric two‑wheeler and three‑wheeler frames.
Issued by Zhongtian (Tianjin) Certification Service Co., Ltd.
Initial issuing date: December 22, 2025
Valid until: December 21, 2028.

This certification proves that our company implements standardized quality control throughout the whole production process, including raw material processing, welding and finished‑product inspection. We guarantee stable and reliable product quality for domestic and overseas customers.