We are one of the biggest manufacturers in china. We have 300 staff in our factory Our products have been send to RUSSIA,QTAR,NORTH AMERICA,AUSTRIA AND SO ON. The blind-guide bricks are widely used in the public places, such as railway station, the subway ,large-scale stadiums, city's infrastructure construction and so on. Our products have already widely used in west station of Beijing south station of Beijing, project extension of west station of Zhengzhou. Specification 250*250*20/25 250*300*20/25 300*300*20/25