Lower Prices

10% off for sales

Excellent Quality

20 Year's experience

Fast Delivery

15-35 days for Delivery

Custom Accept

OEM&ODM accept

About Us

Ningbo Dunpai Machine Co., Ltd. was founded in 2020.located in a port city named Ningbo. we work as  son company of our factory. Our mother factory was established in 2001 and currently owns 150 people,more than 15,000 cubic meter plant. In the past 20 years, factory has been committed to the production, research and development of trailer products (main Jack/ coupler/ winch/Hitch ball) and innovative development of new products (scissor jack/RV camper leg/ Electric Jack/Jockey wheel), now has became the  industry top leader in industry. Products refers to: Trailer Jack, Trailer Coupler and winch, etc., all our goods will be mainly exported to the United States, Australia and Europe market with a high market share. we accept OEM&ODM. It is our factory that brings innovation to our customers and drives the development of the whole industry. 

We do believe our advantage and Manufacturing experience will be your strong business.


Proudly 20-Years’ Manufacturing experience been in this industry


Stamping Workshop

Assembly Worksop

Drilling on Jack Screw

Cutting the Tubes


Wire-Electrode Cutting

Screw Machining

Drilling Holes

Worker do stamping

Need help in choosing correct products?

Our team Specialize in technology, products and machinery softwares such as AutoCAD and 2D and 3D software, can provide customers with reference advice to choose the right product. if need,please contact Mr.Jack & Neil.

Mr Jack

Email: dunpai@dunpaicorp.com

Mr Neil

Email: neilwu@dunpaicorp.com​


Factory have a complete quality control system to ensure that each welding to be 100% good. keep the welding beautiful and practical, prolong the service life, reduce the use of cost.not  strong enough is necessary,ever better looks.


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AREA OF Expertise


RV Stabilizer Jack

1000lbs RV / Camper stabilizer Jack. adjust from 11.62″ to 17.52″.6.5″ Travel. black powder coated. usually used in pair. 2 jacks with a handle.

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Australia Coupler

2000KG Australia sttandard Trailer Coupler. suits 50mm hitch Ball. common style for all Australia market. Zinc plated.

Casting Coupler

15000lbs GTW. fits 2-5/16″ hitch ball. 3″ wide channel bracket.Grade 8 mounting bolts are included. Grade 8 mounting bolts are included

RV Electric Jack

3,5000lbs Electric Jack. 12V DC. 18″ Travel.  LED lights for night-use. A-frame mount with weld-on mount.Black powder coated.

Whole Range of Trailer Jack&Coupler

A wide variety of American and Australian Trailer Jacks, trailer Couplers, basically cover all the styles in the United States,Australian and European market, fully can meet the various needs of customers.

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