Model selection, quotations, OEM/ODM customization — we reply to every serious inquiry within one business day. For international customers, email and Microsoft Teams are the fastest channels.
Pick the channel that suits you best. Include your vehicle type, battery configuration and target quantities for the fastest, most accurate reply.
Best for formal quotations, contracts and technical documents. We reply within one business day.
Our Teams account is yangming@swiftloong.com. Email us a couple of time slots and we'll send you a Teams meeting link — no client install needed, you can join straight from a browser.
One-on-one with our engineer. Add ID "龙讯 杨明" (Swift Loong Yang Ming) and mention your purpose — e.g. "BiDC-X3 inquiry" — for faster approval. Online 9:00–18:00 (CST), workdays.
Stock wholesale and drop-shipping for domestic buyers — live pricing and inventory.
No. 3312 Shengbei Street, BeiHu Tech Development Zone, Changchun, Jilin Province, China. Factory visits welcome by appointment.
The form goes straight to our engineers' inbox. The more detail you give — vehicle type, battery configuration, target quantity and market — the faster and more accurate our reply.
Whatever your purchase scale, there's a cooperation model that fits.
Deep customization of parameters, logo and function modules, backed by professional engineering support.
Regular models in stock at all times; tiered pricing for converter and integrator volume orders.
E-commerce sellers and DIY resellers can ship one piece at a time — no inventory needed.
Overseas markets served through authorized agents, factory-direct from Changchun, China.
| Item | Example |
|---|---|
| Application | Class C RV conversion / van build / off-grid storage cabinet |
| System voltage | Starter battery 12V or 24V; house battery 12/24/36/48V |
| Battery capacity & chemistry | 400Ah LiFePO4 |
| Main loads | 2000W inverter, 12V fridge, diesel heater |
| Target quantity & market | 50 pcs, Australia |
| Customization needs | Logo printing / housing color / RS485 protocol |
Send us your requirements today — our engineers will reply with a model recommendation, wiring list and quotation.
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