What is the module efficiency of these panels?

The module efficiency ranges from 23.7% to 24.4% depending on the model.

Are the solar cells Grade A quality?

Yes, we use Grade A Monocrystalline Silicon cells with 100% sorting.

What is the maximum system voltage?

The maximum system voltage is 1000V or 1500V DC.

Tier-1 Longi Panels Solar 640W Inventory for Commercial Project

Name: Tier-1 Longi Panels Solar 640W Inventory for Commercial Project
Brand: Sail Solar Energy Co., Ltd
SKU: 2191435285

Anhui, ChinaSail Solar Energy Co., Ltd

US$0.105-0.109

10,000 watt

Sample price:US$121.00/piece.Request sample

Product profile

Customization

Available

After-sales Service

Support

Warranty

25 Years

Number of Cells

144cells

Application

Solar Plant

Condition

New

Certification

ISO, CE

Material

Monocrystalline Silicon

Frame

Silver / Black Anodized Aluminium Alloy

Brand

Longi Solar

Maximum System Voltage

1000V/1500V DC

Cable

4mm2; Portrait/Landscape Length

Solar Cell

182mmx182mm, Grade a, Half Cult

Panel Dimensions

2384X1134X30mm

Cell Type

Perc, Half Cell, Bifacial, N Type Topcon

Transport Package

Wooden Pallet and Carton Box

Specification

2278X1134X30mm

Trademark

Longi Solar

Origin

China, Hefei

Production Capacity

100000PCS/Month

Key features

High Efficiency Solar Panels: Module efficiency up to 24.4% with 660W rated power for optimal energy generation.

25-Year Warranty Coverage: Comprehensive 25-year warranty provided for all solar panel units.

Advanced Cell Technology: Features 144 half-cut N-Type Topcon PERC bifacial cells for superior performance.

Strict Quality Control: 100% EL testing and sorting ensure zero micro-cracks and consistent power output.

OEM and ODM Services: Full customization, minor customization, and logo printing available for clients.

Fast Delivery Time: Standard delivery within 5-7 working days for inventory items.

Durable Frame Design: Constructed with Silver or Black Anodized Aluminium Alloy frame for longevity.

Flexible Payment Terms: Accepts T/T, L/C, Western Union, and PayPal with options for small amounts.

Company profile

Fast DeliveryImporters and ExportersIn-stock CapacityCustomization from Samples

Sail Solar Energy Co., Ltd

Anhui, China

CertifiedBusiness Type: Trading Company CertifiedR&D Capacity: ODM Service Available & OEM Service Available CertifiedCustomization Options: Customization from Samples, Customization from Designs, etc. CertifiedExport Year: 1 Year CertifiedNearest Port: Shanghai PortAverage Response Time: ≤5.50h

AI-Powered supplier vetting

SummarySAIL SOLAR ENERGY CO., LTD, located in Hefei, Asia, specializes in the sales of solar and wind power equipment and components. Despite offering customization services, the supplier lacks new product launches and comprehensive after-sales processes. Its financial data is available but lacks detailed analysis. The supplier has no overseas showrooms, agents, or participation in trade shows, which limits its international service capabilities. The R&D capability is minimal with only one engineer, and there are no written procedures for quality assurance or customer complaint handling.

Supplier typeThe supplier is involved in the technology dissemination, sales of solar and wind power equipment, and import/export activities.

After-Sales capabilityThe supplier lacks written procedures for handling customer complaints and preventive actions, indicating a deficiency in after-sales service capabilities.

R&D capabilityThe supplier has not launched new products recently and has limited R&D capabilities with only one engineer.

Production capacityThe supplier offers ODM and OEM services but lacks new product development and innovation.

Customization capabilityThe supplier provides various customization services including customization from samples and designs.