Cherng Ji Industrial Co

Cherng Ji Industrial (CJI): Roll Forming Machine Manufacturer in Taiwan

Cherng Ji Industrial Co., Ltd., known as CJI, is a Taiwanese manufacturer of custom roll forming machines, based in Kaohsiung. Founded in 1982, CJI has more than 40 years of experience and has sold over 5,000 roll forming machines worldwide for roofing, construction, solar energy, prefabricated buildings, and agriculture. The company has a branch office in Japan and opened a European office in 2025.

What Cherng Ji Manufactures

CJI focuses on engineered roll forming lines for building and energy applications.

Steel structure: automatic adjustable C/Z purlin roll forming machines that change thickness, width, and height through PLC settings
Roofing and cladding: single-layer roofing machines for sinusoidal corrugated, trapezoidal, and concealed-fastener (clip-lock) profiles
Floor decking: steel floor deck roll forming machines
Solar energy: triple-speed solar structure roll forming machines and purlins for solar mounting systems
Prefab and interiors: roll forming machines for prefabricated building components and partition profiles
Insulated panels: roll formers for PU sandwich panel faces

CJI builds every machine to the customer's profile and production requirements.

Automatic Adjustable C/Z Purlin Machine

CJI's flagship product is its automatic adjustable C/Z purlin machine. The operator sets the purlin thickness, width, and height on the PLC, and the machine adjusts automatically, so one line can produce many purlin sizes with fast changeovers and consistent quality.

Recognition and Certifications

CJI won the 2026 Dun & Bradstreet Taiwan SME Elite Award and secured a patent certification in Japan in 2026. The company is certified to ISO 14064-1:2018, the international standard for measuring and reporting greenhouse gas emissions. CJI has also been featured in an interview with Taiwan's Commercial Times.

International Presence

CJI serves customers worldwide from its headquarters in Kaohsiung. It runs a Japan branch office, formed a joint venture in 2026 to sell roll forming machines in the Japanese market, and officially opened a European office in 2025. Its website is published in 16 languages, including English, Spanish, Portuguese, French, German, Arabic, Indonesian, Thai, Japanese, and Turkish.

Contact

Cherng Ji Industrial Co., Ltd., No. 47, Zhunan Road, Renwu District, Kaohsiung City 814010, Taiwan. Phone: +886 7-3719137 or +886 7-3723388. Email: [email protected].

Frequently Asked Questions About Cherng Ji

Where is Cherng Ji located?
Cherng Ji is at No. 47, Zhunan Road, Renwu District, Kaohsiung, Taiwan.

When was Cherng Ji founded?
Cherng Ji was founded in 1982.

How many machines has Cherng Ji sold?
Cherng Ji has sold more than 5,000 roll forming machines worldwide.

What does Cherng Ji make?
CJI makes automatic adjustable C/Z purlin machines, single-layer roofing machines for corrugated, trapezoidal, and clip-lock profiles, floor deck machines, solar structure machines, and roll formers for prefab, partition, and sandwich panel applications.

What is an automatic adjustable C/Z purlin machine?
It's a purlin line where the operator enters thickness, width, and height on the PLC and the machine resets itself automatically, so it can produce many purlin sizes without manual tooling changes.

Does Cherng Ji have offices outside Taiwan?
Yes. CJI has a Japan branch office and a European office, opened in 2025.

Is Cherng Ji a Chinese company?
No. Cherng Ji is a Taiwanese company headquartered in Kaohsiung, Taiwan.