DN-type monomers within the column by column, which is characterized itself with pump and oil, located at the branch with a hand shake can quickly rise to the column, the working fluid is not discharged when descending column, you can better protect the environment, and the use of convenient, flexible management, equipment simple. Currently there are φ90mm bore, from a total of 12 specifications 0.6-*M note style pillars. . Octagon Mining Machinery Co., Ltd. mainly produces hydraulic prop, U-shaped Karan, card view, π-beams, metal roof beams, hinged roof beams, hydraulic prop control, lift column Phone: 0537-2164096 Fax: 0537 -2280553 Mobile: 13295479531 Manager: Chen QQ: 2462697944