Import 300w Poly Solar Panel With Low Price — Buy in Bulk from Supplier in China

This 300W polycrystalline solar panel from Changzhou Great Solar Technology Co., Ltd. is built on a 156 x 156 mm poly-crystalline silicon cell configuration with a nominal maximum power of 300W under standard test conditions (STC): 1000W/m irradiance, 25C cell temperature, and AM1.5 spectrum. The panel series spans GSMG-250M through GSMG-300M, with this unit sitting at the upper end of that range. Typical module efficiency for this class of polycrystalline panel falls between 15.5% and 17.2%, depending on cell grade and anti-reflective coating quality. The frame is standard anodised aluminium, with a tempered, low-iron glass front sheet rated for 3.2mm thickness and high transmittance.

The cell matrix uses 60 or 72 cells in series-parallel arrangement, with bypass diodes integrated into the junction box to mitigate hotspot risk under partial shading. The backsheet is typically multi-layer fluoropolymer or PET-based for moisture barrier and voltage withstand. Encapsulant is standard EVA (ethylene-vinyl acetate) with cross-linking degree above 75% typical for this tier of module. Junction box carries IP65 minimum rating. Cable leads are 4mm² PV1-F with MC4-compatible connectors, standard length 900mm per lead. The low-price positioning of this listing suggests cell efficiency at the standard commercial grade rather than premium tier.

Target buyers include EPC contractors, solar farm developers, and commercial rooftop installers seeking volume supply of proven poly technology. The panel suits grid-tied residential systems, small commercial arrays, and off-grid battery charging with appropriate charge controller pairing. For importers, confirm whether the supplier offers IEC 61215 and IEC 61730 certification, as these are standard requirements for most markets. The 0.00% response rate and harbour trust tier indicate limited transaction history on this platform, so direct factory audit or third-party inspection before shipment is prudent. FOB or CIF terms are common for Chinese solar exports, though payment structures and lead times should be negotiated directly with Changzhou Great Solar Technology Co., Ltd.

Changzhou Great Solar Technology Co., Ltd. is located at No.2 Tianshan Road, New District, Changzhou 213022, Jiangsu Province, China. The supplier holds an imported tier designation on the platform, indicating they are registered as an international trading entity rather than a direct manufacturer, though the distinction in Chinese supply chains is often blurred by OEM arrangements. The harbour trust tier and 0.00% response rate with zero average response hours suggest limited or no active engagement through this channel. Buyers should treat this profile as an unverified lead requiring direct due diligence rather than a vetted supplier relationship.

The listing does not state Changzhou Great Solar Technology Co., Ltd. as the manufacturer of record, nor does it list factory certifications, production capacity, or export licence details. No specific quality management system (ISO 9001) or product certifications (IEC, TUV, CE) are confirmed in the profile data. The supplier address places it in Changzhou's New District, an area with established photovoltaic manufacturing presence. Importers should request the supplier's business licence, VAT invoice capability, and any OEM/brand authorisation documents before contract execution. The absence of response data means negotiation timelines and sample availability must be confirmed through direct outreach.