Support & FAQ.

We ship worldwide via DHL Express and FedEx International. See our Shipping Policy for detailed delivery times and costs by region.

Standard international shipping takes 7–15 business days depending on your region. Express shipping is available for 3–7 business day delivery. Orders are processed within 1–2 business days.

Import duties and taxes are determined by your country's customs authority and are the responsibility of the buyer. These charges are not included in the product price or shipping cost. Electronic components typically fall under HS code 8471.50 or 8542.31.

Yes. A tracking number is emailed within 24 hours of shipment. You can track directly via the DHL or FedEx website.

Free standard shipping is available on orders above $500 (North America & Asia Pacific), $700 (Europe), or $1,000 (Rest of World).

The D3-G is a general-purpose automotive-grade SBC with a 9-core Telechips SoC (4x A72 + 4x A53 + 1x R5), ideal for embedded Linux, ADAS prototyping, and industrial control. The AI-G adds a dedicated 8 TOPS NPU for on-device AI inference, optimized for computer vision applications.

TOPST boards run a custom Linux BSP (Board Support Package) provided by Telechips. The SDK includes kernel source, device drivers, and build tools. Community-supported distributions may also be available — check the documentation portal.

Our BMS units are certified under KC62619 (Korean Battery Safety Standard). Additional certifications (CE, UL) vary by model — see individual product pages for details.

Yes. Datasheets, user manuals, SDK downloads, and getting-started guides are available on each product page under Engineering Resources.

Unopened products can be returned within 30 days of delivery. Defective items should be reported within 7 days. See our Return & Refund Policy for full details.

Development boards: 1 year. BMS units: 2 years. Education kits: 1 year. Accessories: 6 months. Warranty covers manufacturing defects and component failure under normal use.

Email support@huconn.com with your order number and description of the issue. We will respond within 1 business day with an RMA number and instructions.

Yes. For orders of 50+ units, contact sales@huconn.com for custom pricing, DDP shipping options, and priority production scheduling.

We offer custom hardware configurations and OEM services for qualified partners. Contact our sales team to discuss your requirements.

We are actively expanding our global distributor network. If you're interested in becoming a TOPST distributor in your region, please reach out via our contact form.