Global Industrial Support

Contact Our Engineering Team

Direct access for purchasing managers and distributors. Get quotes on fleet orders, custom heavy-duty configurations, or partnership opportunities.

Headquarters & Manufacturing

Our main production facility is open for B2B partner visits and factory acceptance tests (FAT). Please schedule an appointment with your account manager before visiting.

Factory Location

No. 22 Gongmao Industrial Street, Xuguantun Town, Wuqing District Tianjin 301700, People's Republic of China

Sales & Technical Support

Mon-Fri, 8:00 AM - 6:00 PM EST

B2B Inquiries

defzhangzhaohong@gmail.com Response time: < 24 Hours

Request Pricing or Info

Complete the form below. For urgent fleet breakdowns, please call our support line directly.

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Why Partner With DEF?

Global Logistics

We handle all export documentation and logistics for international orders, ensuring your heavy machinery arrives at port on schedule.

Custom Engineering

Need specific attachments or chassis modifications? Our in-house engineering team designs solutions for unique manufacturing environments.

Distributor Support

Authorized distributors receive priority parts shipping, extensive technical training, and co-marketing support materials.