Place the prepared glass in a vacuum bag for vacuumizing. The vacuum degree is ≥ 700mmHg (0.092Mpa), the temperature is 100-110 ℃ (the actual temperature of the glass surface), keep it warm for 10 minutes, cool it to below 60 ℃, and discharge the vacuum.

4、 Storage time and conditions When storing, put them in the original packaging, do not take them out, and place them in a dark and ventilated place, with a temperature of not more than 30 ℃ and a humidity of less than 80%.

5、 Product specification:

Thickness: 0.25mm, 0.38mm

Width: 2.1m6. The product has a variety of colors (transparent, opaque and color), which can be selected.

In recent years, EVA film has been controlled by foreign giants including DuPont. According to authoritative data, China's EVA film production can only meet part of the demand of PV module manufacturers, and there is a large gap in the domestic market. In the international market, the supply of high-quality EVA film is in short supply, and the EVA film has once become the bottleneck restricting the production of component factories. With the enhancement of independent R&D and production capacity, domestic products are gradually showing up, such as Hangzhou Sokombo, Foster of Zhejiang Institute of Chemical Technology, Guangzhou Lushan and Chinese Academy of Sciences.