从China供应商批发进口250w Mono Solar Panel For Solar System — FOB条款

The monocrystalline solar panel offered by Hetech Energy Co., Ltd from Zhengzhou, China, is rated at 250W nameplate capacity with a peak power tolerance of 0 to +3%. This tolerance band means each panel may deliver between 250W and 257.5W under Standard Test Conditions (STC: 1000 W/m² irradiance, 25°C cell temperature, AM1.5 spectrum). The positive-only tolerance reduces the risk of underperformance relative to the contract wattage. Buyers should confirm whether the 250W figure in the product title matches the 305W peak mentioned in the description, as this discrepancy requires clarification.

Monocrystalline cells are cut from single-crystal silicon boules, typically yielding higher efficiency than polycrystalline alternatives. The panel construction includes tempered glass frontsheet, EVA encapsulant, a weatherproof backsheet, and an aluminium alloy frame with mounting holes. The source mentions lightweight design, though exact weight and dimensions are unstated. Standard industry practice for this class of panel includes 60-cell or 72-cell configurations with 5-busbar or 9-busbar cell designs. The conversion efficiency figure is not provided; typical monocrystalline panels of this generation range from 18% to 20% module efficiency.

Applications include grid-tied residential rooftops, commercial installations, off-grid battery systems, and mobile applications such as recreational vehicles and marine craft. The panel's electrical characteristics, including open-circuit voltage (Voc), short-circuit current (Isc), maximum power point voltage (Vmp), and temperature coefficient of power, determine compatibility with inverters and charge controllers. Buyers should request the full datasheet to verify these parameters. Hetech Energy Co., Ltd carries a harbour trust tier with no response data; direct contact is necessary to establish current pricing, MOQ, lead times, and available certifications for target markets.

Hetech Energy Co., Ltd is located at No.92 Huayuan Road, Zhengzhou, Henan Province 450000, China. The supplier holds a harbour trust tier with no recorded response rate or average response time. Zhengzhou is an inland city with solar manufacturing presence, though less concentrated than Jiangsu or Zhejiang provinces. The supplier's operational scale, factory ownership, and years in business are not stated in the available profile.

The listing contains a significant inconsistency between the 250W product title and the 305W peak power cited in the description. Buyers should treat this as a critical clarification point. No information is provided about production capacity, R&D investment, export experience, or banking references. Request company registration documents, factory audit reports, and power output flash test data before committing to volume orders.