There is one on Wanjiali Road that specializes in skylights. Siqi Building Materials, the third floor of Wanjiali Home Building Materials Plaza, once installed a sun room, which I found by using Wei's skylight. The boss is very nice and the quality of Dongdong is good.
To tell the truth, Wei seems that the waterproof of the skylight is really excellent.
Leave their business cards.
Tang Jie
13787 1 15405