What building materials markets are there in Zhenjiang?

There are Yuexing Jiurun International Furniture and Zhenjiang Decoration City next to Youth Square, Jinqiao Decoration City next to jiefang bridge, Haomeijia Decoration City in Qilidian (low-grade), Golden Sun International Furniture in Guantang Bridge (closed down soon), Kangxing Decoration City near the former No.1 Middle School (smaller) and Yidu Decoration City in Dingmao Development Zone (under construction). There is also a ceramic city. Since I want to buy a solar water heater, I can't go. Solar water heaters don't seem to be sold much in Decoration City, but there seems to be one in Jinqiao. Generally, there are more roadside specialty stores.