Shandong Dongfeng Shuanglong Machinery Co., Ltd. is a block machine manufacturer with a production history of more than 20 years. We specialize in research, development and manufacture all types of free burning block machines, autoclaved aerated concrete block production line / AAC. With a wide range, good quality, reasonable price and stylish designs, our products are extensively used in producing and manufacturing various bricks and blocks. Our annual capacity is 4,000 sets of block machines.