Shandong Dongfeng Shuanglong Machinery Co., Ltd. is located in Linyi city, Shandong province, China. Its a factory with 20 years experience in machinery R&D and manufacture. We mainly offer concrete block machine, AAC / ALC block equipment line and environmental protection equipment. Our factory covers an area of 96,000©O and has 5 production plants. We have 28 senior engineers and more than 300 technicians. Our  products are exported to more than 20 countries. We belong to the Top 3 block machine manufacturers.