Do you know the secrets of polyurethane screen manufacturers?

Do you know the secrets of polyurethane screen manufacturers?
Do you know the secrets of polyurethane screen manufacturers? Xiaobian has come to complain to you. Have you seen many manufacturers selling polyurethane screen in the market? But there is not much real production. Like the birthplace of screen in Binzhou, Shandong Province, there are not many polyurethane screens produced. Yutai screen and Zhongxu screen are two of them. This secret edition generally does not tell him, only you know it, do not tell others that Yutai screen and Zhongxu screen are manufacturers.