Sunlight panels are divided into several grades according to quality. First of all, customers should understand. Generally divided into three grades: high, medium and low. In order to adapt to different customer groups and customer needs, products are divided into three categories according to quality assurance, namely 10 year warranty, 5 year warranty and 3 year warranty. Here are some practical ways to distinguish between good and bad solar panels:

Industrial waste production

Look, there is no trademark on the brand, and there is no specific address and phone number. The whole solar panel is rolled into a tube and unfolded after 6 hours, so it cannot be completely recovered (or deformed). When the whole solar panel is spread out, there is obvious ripple deformation, which shows that this solar panel is produced from industrial waste or contains a lot of PVC recycled materials. The appearance of the solar panel is fuzzy or has small spots, indicating that the solar panel is produced by industrial waste.

feel

Pinch the solar panel with your hands. Then the solar panel has enough specific gravity and good strength. On the contrary, it is lighter and less strong. Whether the protective film is neat.

parcel

Observe the packaging of the sun board. These details can show whether the manufacturer attaches importance to the production process. This is mainly a matter of attitude. Observe whether the color of the sun panel is uniform.

Tear off protective film

Tear off protective film. Whether the sunlight surface is smooth and whether there are bubbles and particles. If there are more particles and bubbles, it means that the raw material of the solar panel is poor and the grade is low. If it is small, it may be a better raw material. If there is hardly any, it means that it is a high-quality raw material.

sunniness

Under the scorching sun, the sun board obviously yellowed or cracked for 4 months. At the same time, there is little difference between people's feelings under the sun board and those under direct sunlight, which shows that there is no UV*** extrusion layer on the surface of the sun board. Solar panels bend horizontally and are easy to break. The quality assurance certificate on the plastic film of the sunshine board is vague (for example, some plastic films of the sunshine board say quality assurance, but how many years the quality assurance is not specified, and this kind of sunshine board is 100% unqualified product. )