Our Products

TOPCon offers the best price-performance ratio and is ideal for most climates. HJT has a superior temperature coefficient (-0.24%/C vs -0.30%/C), making it 6-8% more productive in hot climates above 35C. Both are N-type bifacial technologies.

Our MOQ is 1 full container (40HQ): 720 pieces for 600W/640W modules, or 612 pieces for 730W modules. For first-time buyers, we can discuss smaller trial quantities.

Yes. All JUSTSOLAR modules are TUV certified and comply with IEC 61215, IEC 61730, CE, and ISO 9001. Additional market-specific certifications (MCS, BIS, INMETRO) are available.

Payment terms are confirmed in the formal PI. For new buyers and most first orders, JUSTSOLAR uses 100% T/T before shipment. Any exception requires written approval from Frank and will be stated in the PI.

2-6 weeks depending on order size and current stock. Stock items can ship within 1-2 weeks. Ocean freight to destination takes 25-45 days depending on port.

Yes, 100% EL (electroluminescence) testing on every pallet. Flash test reports with IV curves are included with every container. Third-party inspection (SGS, TUV, Bureau Veritas) is welcome.

Yes, but modules fill the entire container with no space for other items. Inverters and mounting must ship separately. You can mix module wattages if the total fills complete containers.

25-year product warranty + 30-year linear performance warranty on all modules. First-year degradation under 1%, annual degradation under 0.4%/year. Power output guaranteed above 87.4% at year 25.