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LONGSUN SOLAR ( old Kelan Solar ), established in 2008, is a professional green power producer of solar panel and solar module in Ningbo, China. Our main products are 2 -350 watt mono crystalline and poly crystalline silicon solar panels in standard or special sizes and shapes. We also design solar street light system and solar power systems for homes and industrial use.


High quality raw materials, strict control system, advanced technology and testing equipment ensure each piece of solar panel from LONGSUN SOLAR with extremely supper efficiency and long usage time of 25 years. Until now,our solar panels and systems were exported to the overseas market, like Southeast Asia countries, Middle east countries, South America countries and  Africa.


Choose us means you get a reliable partner with mutual development and mutual benefits.

Best materials

250wp mono solar panel/ 250w monocrystalline solar panel, pv module.

1. Glass:

> High-transmittance low-iron tempered glass

> Antireflective glass
> Translucency of normal luminance is increased by 2%
> Module efficiency is increased by 2%
> Self-cleaning function
> Service life is as long as 25 years (30 years optional)

3. Frame

> Anodized quality aluminum frame, beautiful appearance

> Conventional frame
> Silver or black frames are optional
> Boost bearing capability and prolong service life

> Serrated-clip design tensile strength

> Seal-lip designglue injection

2.Anti-aging EVA

> Excellent weathering resistance TPT

4.Solar Cell

> High Efficiency PV Cells
> Appearance Consistency
> Color sorting ensure consistent appearance on each module
> Anti-PID

5.Junction box

> Conventional standalone edition and engineering custom edition
> Quality diode ensures module running safety
> IP67 protection level
> Heat dissipation
> Long service life

★ Important:Wind resistance, pressure resistance, high conversion efficiency.


On-grid power system.

Off-grid power system.

Solar power station.

EPC projects.


Single carton packing. Pallets packing. Wood cases packing.

Corner ProtectionInside CartoCarton sidePallets Package
Container Loading


Factory Direct Price

NICE Quality

Offer free samples before order confirmed.

No MOQ, Small Order Welcome

Customized Design

Suppport OEM for all orders

Support REFUND Money if the quality is not satisfactory

PAYMENT Support T/T, L/C, Credit Card, E-checking, Western Union

Tag:polycrystalline silicon solar panels, mono solar cells panel; lightweight solar panels.

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