What payment methods do you accept?

We accept T/T, L/C, D/P, PayPal, and Western Union depending on the order amount.

What type of solar cells are used in these panels?

We use Grade A Monocrystalline Silicon Half Cell PERC N-Type Topcon cells.

Is the junction box waterproof?

Yes, the junction box has an IP68 rating for full waterproof and dustproof protection.

Longi 550W 540W 530W 555W Mono Perc Solar Panel Half Cell Solar Panels System

Name: Longi 550W 540W 530W 555W Mono Perc Solar Panel Half Cell Solar Panels System
Brand: Sail Solar Energy Co., Ltd
SKU: 2092764635

Anhui, ChinaSail Solar Energy Co., Ltd

US$0.11-0.15

100,000 watt

Sample price:US$121.00/piece.Request sample

Product profile

Customization

Available

After-sales Service

Support

Warranty

25 Years

Model NO.

LONGi Hi-MO 6

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

2278X1134X30mm

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

25-Year Warranty: Comprehensive 25-year warranty coverage for long-term reliability.

High Efficiency Cells: Up to 21.5% module efficiency using Grade A Monocrystalline Silicon.

Durable Glass Design: 3.2mm high transmission AR coated tempered glass for enhanced protection.

IP68 Junction Box: Waterproof and dustproof junction box with three diodes for safety.

OEM/ODM Customization: Full customization available including frame color and logo branding.

Strict Quality Control: 100% EL testing and color sorting ensure zero micro-cracks and consistency.

Fast Delivery: 5-7 working days delivery time for standard orders.

Flexible Payment Terms: Accepts T/T, L/C, PayPal, and Western Union for various order sizes.

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: ≤6.15h

AI-Powered supplier vetting

SummarySAIL SOLAR ENERGY CO., LTD is based in Hefei, Asia, and supplies hybrid inverters, lithium and lead-acid batteries, N-type solar panels, and system solutions. Its stated business scope covers photovoltaic, solar thermal, and wind-related products, as well as import and export activities. The supplier reports OEM and ODM capabilities and broad customization options, but it launched no new products in the past year and has only one R&D engineer, with no available SDK. Overseas service infrastructure is limited: no overseas showroom, agents, branches, or offline trade-show participation are reported. Quality and service governance also appears insufficiently documented, including no written complaint-handling, corrective-action, or supplier-assessment procedures, and zero quality-control testing equipment is reported. Financial information is present only as year labels, so credibility cannot be determined from the provided evidence.

Supplier typeThe supplier is an energy-product supplier and technology importer/exporter, offering hybrid inverters, batteries, N-type solar panels, and system solutions. Its stated scope also includes photovoltaic equipment, solar thermal products, and wind turbines and parts, indicating a broad renewable-energy trading and supply profile.

After-Sales capabilityAfter-sales and service infrastructure appears limited: the supplier reports no overseas showroom, agents, branches, overseas-service countries, or offline trade-show participation. It also has no written complaint-handling or corrective/preventive-action procedures, although stated lead times are within 15 workdays and multiple payment and quotation terms are accepted.

R&D capabilityThe supplier provides ODM services and has one R&D engineer whose stated responsibility is preparing samples to customer requirements. However, it launched no new products in the past year, has no available SDK, and reports no recent product-information R&D activity, limiting evidence of strong independent innovation.

Production capacityThe supplier reports 10 qualified service suppliers and peak- and off-season lead times within 15 workdays. However, it reports zero quality-control testing equipment, unknown traceability and quality-assurance status, and no written supplier-assessment procedures, so production capability is not adequately supported by quality-control evidence.

Customization capabilityThe supplier explicitly offers customization from samples, designs, full customization, minor customization, and flexible customization. Its ODM availability, OEM service for well-known brands, and sample preparation according to customer requirements further support customization capability.