Help Center

FAQ

Answers to common questions about our solar inverters, energy storage and LiFePO4 batteries — and about ordering factory-direct.

Company & Ordering

Are you a manufacturer or a trading company?
We are a manufacturer. HONG KONG TUOXIANG TECHNOLOGY CO., LIMITED operates its own production in Dongguan, China, so you buy inverters and batteries factory-direct — without trading-company markups.
Do you offer OEM / ODM and private labeling?
Yes. We support custom branding, private-label packaging and tailored specifications for distributors, installers and integrators building their own product line.
What is your minimum order quantity (MOQ)?
MOQ depends on the model and whether the order is standard or customized. Samples are available for evaluation before a bulk order — send us your target models and quantities for exact terms.
Can I order samples before placing a bulk order?
Yes. Sample orders are welcome so you can verify quality and performance before committing to volume.
What are your payment terms?
Terms are confirmed on your proforma invoice — typically a deposit to start production with the balance before shipment. We will align on the details for your specific order.

Products & Specifications

What is the difference between on-grid, off-grid and hybrid inverters?
On-grid (grid-tie) inverters feed solar power into the utility grid. Off-grid inverters run independently with battery storage. Hybrid inverters do both — using solar, grid and battery together — which makes them ideal for self-consumption and backup.
Do your inverters support both EU and US grids?
Yes. Our products are engineered to EU single-phase (230V) and US split-phase (120/240V) standards. Tell us your market and we will recommend the correct model.
What capacity ranges do you offer?
Hybrid inverters from roughly 3kW to 16kW, PV/grid-tie and off-grid inverters from 4kW to 10kW, and LiFePO4 batteries in 12V, 24V and 48V from 100Ah up to 628Ah.
What battery chemistry do you use, and do batteries include a BMS?
We use LiFePO4 (lithium iron phosphate) cells for safety and long cycle life. Batteries include a built-in BMS, with RS485/CAN communication on higher-voltage models.
Are your inverters compatible with third-party batteries?
Many models communicate over RS485/CAN and can work with compatible battery systems. Share your battery brand and protocol and we will confirm compatibility.

Certifications & Compliance

Are your products certified?
Our products are CE certified for international sale. Additional certifications may be available depending on the model and market — contact us for the current certification list.
Are the batteries safe and compliant to ship?
LiFePO4 batteries are classified as dangerous goods. We ship them by approved, compliant methods and provide the required documentation for your destination.

Shipping, Warranty & Support

Do you ship worldwide?
Yes. We ship globally by sea and air freight, and by express courier for samples and smaller orders, choosing the best method for your order size and destination.
Who is responsible for customs duties and taxes?
Unless we agree otherwise (for example under DDP terms), import duties, taxes and customs clearance are the buyer's responsibility, as is local import compliance.
What warranty do you provide?
Our products carry a manufacturer's warranty against defects in materials and workmanship under normal use and proper installation. The exact period and terms per model are stated in your quotation and documentation.
What happens if a unit arrives defective (DOA)?
Notify us within 7 days of delivery with the order number, serial number and photos or a short video. After verification we will arrange a replacement, parts or another remedy.
Do you provide technical support?
Yes. Our team supports product selection, manuals, configuration and troubleshooting. Inverters and batteries must be installed by qualified personnel following the manuals and local electrical codes.

Still have questions?

Our team is happy to help with product selection, specs, quotes and OEM / ODM requests.

Contact Us