Changsha, Hunan, China · Mon–Fri 9:00–18:00 (UTC+8)
[email protected] +86 134 6767 4786 WhatsApp
Contact

Talk to Our Sales & Engineering Team

Reach us by WhatsApp, email, phone or WeChat — direct line to sales, with engineering looped in when your project needs it. Reply within 24 hours (UTC+8).

24-hour reply UTC+8 English / 中文 Drawings welcome

WhatsApp

+86 134 6767 4786
Fastest reply for overseas buyers

Email

[email protected]
Send drawings, specifications, BOM

Phone

+86 134 6767 4786
Sales mobile · office hours UTC+8

WeChat

13467674786
Click to view QR code

Direct contact

Helpful to include (optional)

If you already have these on hand, sharing them speeds up our reply:

  • Target vehicle or machine and how it’s used (heavy truck, excavator, bus, etc.).
  • Annual volume or first-batch quantity.
  • Key requirements you already know — e.g. voltage, working temperature, ingress protection.
  • Drawings or a parts list (BOM), in any common format.

Drawings and files are easiest to send via email or WhatsApp. NDA available on request.

Headquarters & manufacturing

Changsha Youlai Electronic Technology Co., Ltd.

International Enterprise Center, Yuhua District, Changsha, Hunan, China.

Visits welcome by appointment — please coordinate at least one week ahead via email or WhatsApp. For an overview of our production lines and labs, see the quality page.