There are several sun panels according to the quality grading, the first customer to understand. Generally can be divided into high, medium, generally three grades. In order to adapt to different customer base and customer demand, the product of three products under warranty, 10 year warranty, 8 year warranty and 5 year warranty. Each sub-brand goods, raw materials, quality, prices are not the same There is also a number of manufacturers to provide low-sun panels. Sun board shake the market price of the larger case, the customer is only aware of these, you can use the product according to their needs and options. As the saying goes, you pay the face of low prices of products, customers in the purchase is not to stay in the heart, whether the products meet required quality standards. Also note that some businesses shoddy, not to spend money to buy a 10-year warranty for 8 years or 5 years or even lower quality products. 



 Here I introduce some of the distinction between good and bad the sun is very practical approach to board: 



 1 hand to squeeze the sun panels. The proportion of full sun panels, like the natural strength. Otherwise than in light, strong enough. Film is to maintain clean, 


 2. Observe the sun board packaging. Clean, there is no shedding, these details can show manufacturers on the production process is attention. This mainly reflects the attitude. Watch the sun plate color is uniform, 


 3. Tear film maintenance. Sun board is formed, whether there are air bubbles, particles. If more particles and larger bubbles, then the sun plate of raw materials is poor, low-grade boards. If fewer small, it may be better materials. If almost no, it means that better quality raw materials. Typically the plate is so ten years warranty. 


 4 Comparison of different batches of the same sun the color plate. 

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