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. Typical reply within one business day.
Contact methods
Direct contact
- Email[email protected]
- Sales Mobile+86 134 6767 4786
- WhatsApp+86 134 6767 4786
- WeChat ID13467674786
- Office hoursMon–Fri, 9:00–18:00 (UTC+8)
- LanguagesEnglish · 中文
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. If no published platform fits, see how a new-design programme runs.
Open the full RFQ checklistHeadquarters & 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.