Is the product suitable for industrial applications?

Yes, these solar panels are designed specifically for industrial applications.

What is the panel efficiency?

The panel efficiency reaches up to 20.9% with PERC and Half Cell technology.

What payment terms do you accept?

We accept LC, T/T, PayPal, and Western Union for payments.

Longi High Efficiency Solar Panels 440W Mono Solar Power Panel

Name: Longi High Efficiency Solar Panels 440W Mono Solar Power Panel
Brand: Sun Labmem Co., Limited
SKU: 1925493511

Hongkong S.A.R., HONG KONG, CHINASun Labmem Co., Limited

US$35.00-65.00

500 piece

Sample price:US$0.00/piece.Request sample

Product profile

Customization

Available

After-sales Service

After-Sales Installation

Warranty

25 Years

Model NO.

SLSP003

Number of Cells

144 PCS

Application

Industrial

Condition

New

Certification

EST, ISO, CB, CE

Material

Monocrystalline Silicon

Connector

Compatible Connector

Inverter

MPPT Controller&Inverter

Controller Type

MPPT, PWM

Package

Wooden Box

Transport Package

Caron Then in Pallet

Specification

Weight: 23.5kg

Trademark

Origin

China

Key features

High Efficiency PERC Technology: Features PERC, Half Cell, and Bifacial design with up to 20.9% panel efficiency.

Durable Double-Glass Construction: Built with monocrystalline silicon cells and anodized aluminum alloy frame for longevity.

IP68 Waterproof Rating: Ensures reliable performance in harsh weather conditions with high water resistance.

25-Year Warranty Coverage: Comprehensive warranty protection for 25 years on the solar panel system.

Multiple Power Output Options: Available in 440W, 445W, 450W, and 455W models to suit various energy needs.

OEM and ODM Services: Flexible contracts accepted with custom connector and inverter compatibility.

Fast Off-Season Delivery: Lead time within 15 workdays during off-peak seasons for quick fulfillment.

Global Shipping Options: Supports FOB, CFR, CIF, DDP terms with ports in Shanghai, Shenzhen, and Qingdao.

Company profile

Sun Labmem Co., LimitedHongkong S.A.R., HONG KONG, CHINA

CertifiedBusiness Type: Trading CompanyExport Year: 2019-04-01Nearest Port: shanghai, shenzhen, qingdaoAverage Response Time: ≤3.25hTerms of Payment: LC, T/T, PayPal, etc.International Commercial Terms(Incoterms): FOB, CFR, CIF, DDP, Others

AI-Powered supplier vetting

SummarySun Labmem Co., Limited is identified as both a trading company and manufacturer/factory based in Hong Kong, with a factory in Fujian and sourcing agent services as its main listed offering. It reports ISO 9001 certification, more than 10 production lines, fewer than five quality-control staff, and 6–10 years of R&D engineer experience. The supplier states that it provides 24/7 helpdesk support, timely after-sales service, and experience from dozens of international projects. Export sales account for 90%, with exporting activity beginning in 2019. Lead time is stated as within 15 workdays during off-peak periods but 2–3 months during peak season. Evidence supports service capability, certification, broad market reach, and manufacturing access, while financial credibility, innovation output, customization execution, and verifiable customer cases remain insufficiently documented.

Supplier typeThe supplier is explicitly classified as both a Trading Company and Manufacturer/Factory, while its listed main product or service is sourcing agent services. This indicates a mixed sourcing and manufacturing-related business model rather than a purely specialized factory profile.

CertificationsThe supplier reports holding ISO 9001 certification for its management systems. The slice does not provide the certificate number, issuing body, scope, or validity period, but the stated certification is explicit evidence of a formal quality-management system.

After-Sales capabilityThe supplier states that it maintains a 24/7 helpdesk, provides attentive service, and follows up with after-sales service in a timely manner. These explicit service commitments support after-sales capability, although no performance metrics or customer references are provided.

Production capacityThe supplier identifies itself as a manufacturer/factory, reports more than 10 production lines, and lists a factory location in Fujian. It also states an off-peak lead time within 15 workdays, but peak-season fulfillment may take 2–3 months and quality-control staffing is fewer than five, indicating capacity evidence alongside operational constraints.