Would you replace the current classical stoplights with these new sand glass Traffic Lights?
大家想要当前传统的老式红绿灯换成这种新型的沙漏交通信号灯吗?
We want to buy Iron Oxide, Limonite, Kaolin Clay, Gypsum Calcium Carbonate, sand glass, Fire Brick, Feldspar, Quartz, Bentonite, Dolomite Metal Mineral.