Mid-range products, which are good to use, good in quality and moderate in price, can be used in buildings.

I saw the words upstairs. I didn't see the words upstairs when I answered just now. The prices upstairs are all relatively high. We usually use Dayu, Yuhong and Hongyuan. They are all from Weifang. The quality feels good. However, they may not have some products, some EPDM manufacturers have been eliminated, and some root-resistant waterproof products are no longer produced.