What is the efficiency of the polycrystalline solar panel?

The module efficiency ranges from 17.0% to 18.5% depending on the model, with peak power from 330W to 360W.

Do you provide turn-key solar systems?

Yes, we offer turn-key solar systems to help clients save time and money on installation and setup.

Rosen Solar 320W 330W 340W Highest Efficiency Poly Home Solar Panel

Name: Rosen Solar 320W 330W 340W Highest Efficiency Poly Home Solar Panel
Brand: Rosen Solar Energy Co., Ltd.
SKU: 873561765

Anhui, ChinaRosen Solar Energy Co., Ltd.

US$79.20

100-499 pieces

US$75.90

500-999 pieces

US$72.60

1,000+ pieces

Sample price:US$80.00/pieces.Request sample

Product profile

Customization

Available

Warranty

25 Years

Number of Cells

72pcs

Model NO.

RS330P-72

Application

Home, Commercial, Industrial

Condition

New

Certification

EST, ISO, CB, CE, TUV, VDE, IEC61215, IEC617, Pid, Cec, Jet

Material

Polycrystalline Silicon

Weight

22kg

Solar Cell

5bb Poly 156X156

Glass

3.2mm Tempered Low Iron

Junction Box

IP67 Rated

Cable

PV Cable 4mm^2, 900mm

Cell Orientation

72cells(6*12)

Connector

Mc4

Frame

Silver/Black Anodized Aluminium Alloy

Tpt Backsheet

White/Black Backsheet

OEM

Acceptable

Transport Package

2PCS/Carton, 27PCS/Pallet

Specification

1956*992*40mm

Trademark

Rosen Solar/OEM/ODM

Origin

China

HS Code

8541402000

Production Capacity

15000PCS/Week

Key features

25-Year Warranty Coverage: 25 years total workmanship and materials warranty with linear power output guarantee.

High Efficiency Cells: A-grade polycrystalline silicon cells with efficiency up to 18.5% for 360W model.

OEM Customization: Acceptable OEM service with customizable frame color, backsheet, and junction box.

Global Certifications: Certified by TUV, CE, ISO, CB, VDE, IEC61215, and other international standards.

Fast Delivery: Delivery within 5-7 days, with peak and off-season lead times within 15 workdays.

Quality Assurance: 100% EL and flash test performed before packaging and shipping.

Wide Power Range: Power range from 330W to 360W for 72-cell poly panels, plus 3W-500W options.

Turn-key Solutions: Complete solar systems offered to save time and money for clients.

Company profile

Fast DeliveryOverseas ServicesCustomization from SamplesOEM Services

Rosen Solar Energy Co., Ltd.

Anhui, China

Business Type: Manufacturer/FactoryExport Year: 2008-01-01Nearest Port: Ningbo Port, Shanghai Port, Shenzhen PortAverage Response Time: ≤8.74hTerms of Payment: LC, T/T, D/P, etc.International Commercial Terms(Incoterms): FOB, EXW, CFR, CIF, DAT, FAS, DDP, DAP, CIP, CPT, Others, FCA

AI-Powered supplier vetting

SummaryRosen Solar Energy Co., Ltd. is identified as a Chinese manufacturer/factory offering solar panels, solar systems, lithium batteries, AGM/GEL batteries, and energy storage systems. The supplier reports broad customization, ODM, SDK availability, recent new-product activity, and OEM service for known brands. Its service procedures include documented assessment, corrective action, and complaint-handling records, although the approved-supplier list lacks approval signatures or dates. Overseas service is reported in Hungary for debugging, equipment installation, and training, but there are no overseas showrooms, agents, branches, or offline trade-show participation. Export sales represent 71%–90% of total sales, and the supplier reports peak- and off-season lead times within 15 working days. Production-scale information is inconsistent: one slice describes a battery factory with 145,000 square meters and more than 1,360 employees, while another lists 20 total employees. No certification information or...

Supplier typeThe supplier is explicitly identified as a Manufacturer/Factory and a limited company in China. Its stated product scope includes solar panels, solar systems, lithium batteries, AGM/GEL batteries, and solar energy storage systems, while it is not reported as part of a larger company group.

After-Sales capabilityThe supplier reports overseas services in Hungary, including debugging, equipment installation, and training. It also has written procedures and followed records for service assessment, corrective and preventive actions, and customer complaint handling; however, it has no overseas showroom, agent, branch, or offline trade-show participation, and its approved-supplier list lacks approval signatures or dates.

R&D capabilityThe supplier reports new-product activity during the past year, ODM service, and an available SDK. Its business scope also explicitly includes R&D and production of solar LED and optical-material products, supporting an active product-development capability.

Production capacityThe supplier states that it manufactures, processes, assembles, sells, and installs related products, and describes battery production across lithium, VRLA AGM, VRLA GEL, OPzS, and OPzV types for multiple applications. Production-scale evidence is inconsistent because one slice reports a 145,000-square-meter factory with more than 1,360 employees, while another lists 20 total employees; capacity cannot therefore be reliably quantified.

Customization capabilityThe supplier explicitly offers customization from samples, customization from designs, full customization, minor customization, and flexible customization. These capabilities are reported in both the R&D and design-service information, indicating broad customization coverage.

Client casesThe supplier reports providing OEM services for known brands, which is evidence of at least one type of customer engagement. However, no brand names, project details, order examples, or independently verifiable customer case information is provided.

Product Q&A

Q:What is the warranty period for the solar panels?

We provide a 25-year total workmanship and materials warranty, along with a linear power output warranty of at least 90% for 10 years and 80% for 25 years.

Q:Can I customize the solar panel specifications?

Yes, OEM is acceptable. You can customize the frame color (Silver/Black), backsheet (White/Black), junction box, and other components.

Q:What certifications do your solar panels have?

Our panels are certified by TUV, CE, ISO9001, ISO14001, SGS, CB, VDE, IEC61215, IEC617, Pid, Cec, and Jet.

Q:What is the lead time for delivery?

Delivery details are 5-7 days. The average lead time is within 15 workdays for both peak and off-season periods.

Q:What payment terms do you accept?

We accept LC, T/T, D/P, PayPal, Western Union, Small-amount payment, and Money Gram.