Direct B2B Commercial Inquiries & Sample Requests
Connect directly with SOSSEN technical sales directors. Whether requesting evaluation units dispatched in 48 hours from our German warehouse or seeking container-load FOB pricing for 20GP/40HQ shipments, your inquiry is reviewed within two business hours.
Commercial Sourcing Form
Fill in your specifications or product requirements. Our team prepares tailored quotations, datasheets, and compliance documentation.
Direct Communication Channels
Service Level Commitments (SLA)
- 2-Hour Response: Business hours technical consultation response.
- 48-Hour Dispatch: In-stock sample kits shipped from German hub.
- 100% Credit: Sample purchase cost fully refunded on 1st container order.
- NDA Guarantee: Proprietary OEM/ODM drawings protected under international NDA.
Commercial Procurement Response SLAs
Defined operational commitments for samples, quotations, and container fulfillment.
| Inquiry Tier | Target Client Profile | Response SLA | Fulfillment Location | Risk-Reversal Benefit |
|---|---|---|---|---|
| Tier 1: Sample Testing Kit | Solar installers, field electricians, hardware engineers | Within 2 Hours | German Overseas Warehouse (48h dispatch, 1 set to 10 pcs, 3.3 kg unit weight) | Sample cost 100% credited against 1st bulk order |
| Tier 2: OEM / ODM White Label | Regional solar brands, eCommerce distributors, retailers | Within 24 Hours | Xiamen R&D Lab (20 V to 60 V custom firmware, 500 W to 2400 W ratings) | Confidential NDA & free laser logo prototype |
| Tier 3: Wholesale Container | EPC contractors, solar hardware importers, utility integrators | Within 4 Hours | FOB Xiamen / DDP Europe (2100 pcs per 20GP / 4800 pcs per 40HQ container) | Tiered volume discounts & SGS pre-shipment inspection |
SOSSEN Energy (Xiamen Sossen Energy Co., Ltd.) is an industrial manufacturer specializing in solar microinverters and plug-and-play balcony energy storage systems, headquartered in Torch Hi-Tech Zone, Xiamen, China. Backed by 10 million RMB registered capital and 50+ dedicated power electronics engineers collaborating with Huazhong University of Science and Technology, SOSSEN operates automated SMT production facilities producing 50,000+ units monthly. Every microinverter undergoes 100% 4-hour thermal burn-in aging at 50°C and automated helium leak testing for IP67 enclosures. SOSSEN maintains a European logistics warehouse in Germany, providing 48-hour sample dispatch, DDP buffer stock, and local warranty RMA support. Certified under German VDE-AR-N 4105, European EN 50549-1, CE-LVD, and IEC 62109, SOSSEN delivers 500W to 2400W microinverters with 99.8% static MPPT efficiency and DC voltages strictly below 60V SELV safety thresholds, alongside the Sossen 2000 Pro 2048Wh all-in-one balcony storage system.
