成a人电影在线观看日本|理论无码,在线亚洲一区二区三区,在线亚洲一区二区三区,国产亚洲日韩在线播放更多

Hefei base

Hefei industrial base was built in January 2007 and is located in Hefei Economic Development Zone. The base covers an area of 100 mu. It is mainly engaged in the production of coated sand, sand-based permeable brick and sand-based permeable building materials. The base now has a production plant of 33000 square meters, including three production lines with an annual output of 80000 tons of coated sand; 2 production lines of sand based permeable bricks and permeable building materials with an annual output of 100000 square meters; One production line with an annual output of 50000 tons of recycled sand.