1.Before you use, you can cut a square and weigh it with a Kg scale. The board with higher grade quality has strict production standard. The normal international standard is 8mm and the weight is 1.5Kg; The PC sunlight board thickness of 10mm weighs 1.7Kg
2.Measure the wall thickness of the PC sunshine board. The general standard is4mm( 3.8mm-4mm ). Many manufacturers will reduce a lot from the thickness.4mm is only 3.5mm. the superior wall thickness is generally about 0.6mm-0.8mm, the inferior wall thickness is generally more than 0.5, if the board is less than this thickness, I hope the customer will think carefully before buying. Because if the thickness of plate is thin, it is easy to be destroyed by the hail weather when in use.
3.Tear off the protective film, then you can observe in detail if the surface of the sunshine board is flat, whether there are bubbles or particles, the color of the sun board is uniform. If there are a lot of particles and air bubbles on the surface of the sunshine board, then it shows that the use of the sunshine board is recycling old materials or bad raw materials ; otherwise, is good raw materials.
4.You can also see if there are trademarks , specific address and telephone on the brand. You can also roll the entire sunshine board into a tube for 6 hours,then unfold it to see if it can be completely recovered. If there is a very clear ripple after unfolding, it shows that the sunshine board is produced by industrial waste or contains a lot of recycled materials.
5.Observe the sunshine board packaging.See if the sunshine board is clean or has any loss. You can judge if the processing technology of the sunshine board manufacture is exquisite from this aspect.
6.Exposure the sunshine board to the sun.If there is no obvious yellowing or surface burst and people don’t feel the difference under the sun and the sunshine board, then it shows that the appearance of sunshine board has no UV co-extrusion layer.
7.You can also see if the protective film is clean and tidy, and the surface has small spots and is black. if transverse bending sunshine board is able to break can effectively judge the quality of sunshine board.