PV Modules-Zhengzhou Hengling New Energy Technology Co., Ltd.

Product Basic Parameters

1. What is the wattage & efficiency of your solar panels?

We supply monocrystalline solar panels with 350W–700W options. Module efficiency ranges from 21% to 23.5%, high light absorption, suitable for home, commercial and off-grid system.
2. What are the panel dimensions & weight?

Different wattage has different size. We can provide exact dimension and weight sheet according to your model request. Custom size is also available.
3. Is it monocrystalline or polycrystalline?

Mainly high-efficiency monocrystalline solar panels, better low-light performance, longer service life and higher power generation than polycrystalline.

1. What is the IP rating of the solar module?

Our solar panels adopt IP66 waterproof & dustproof, resistant to rain, snow, sandstorm and harsh outdoor weather.
2. Can the panel withstand hail & strong wind?

With high-strength tempered glass and aluminum alloy frame, it supports hail impact resistance and high wind load, suitable for outdoor long-term installation.
3. Anti-rust & corrosion resistance?

Anodized aluminum frame and anti-corrosion backsheet, perfect for coastal, humid and high salt mist areas.

1. How much electricity can one solar panel generate per day?

Power generation depends on local sunlight. Normally, a 550W panel can generate 2.2–3.5 kWh/day under standard sunlight conditions.
2. Does it work in cloudy or rainy days?

It can still generate power on cloudy days with lower output. We recommend matching battery energy storage system for stable power supply.
3. What systems is this panel suitable for?

Widely used for off-grid / on-grid solar system, home rooftop, villa, farm, factory, RV, trailer and solar energy storage system.

1. Do you have certification for import?

Our solar modules have CE, TUV, IEC certifications, meet most countries import standards, support smooth customs clearance.

1. What is the lifespan and warranty period?

• Service life: 25–30 years

• Product warranty: 12 years material & workmanship warranty

• Linear power output warranty: 25 years
2. Will the power attenuate after long use?

Low attenuation technology, annual power attenuation less than 0.5%, still maintain over 85% power after 25 years.

1. Is it easy to install? Do you provide installation manual?

Plug-and-play design with MC4 connector. We provide detailed installation manual and wiring diagram. Mounting brackets can be matched as request.
2. Can I connect multiple panels in series or parallel?

Support series and parallel connection. We can provide connection suggestions according to your battery voltage and inverter parameters.

1. Can you do OEM / custom logo & packaging?

Custom logo, printing, color box packaging and private label service are available for bulk order.
2. Can I get sample first?

Sample order is acceptable. Bulk order discount after sample confirmation.

1. What is your MOQ?

Low MOQ, 1 piece for sample, bulk price for large quantity.
2. How about delivery time?

Sample: 3–7 working days. Bulk order: 15–25 working days We support sea freight, air freight and door-to-door shipping.
3. Do you support DDP shipping?

Yes, we can offer DDP shipping service for most countries, no extra customs fee for you.