Chinease biggest Alumina production enterprises—Chiping XinFa Alumina LTD. The annual output of 2 million tons. Jingjin help them to solve the red mud dewatering problem , first step is to withdraw iron from the red mud by using 50 sets of 2000 x2000mm filter press and then lower the cake moisture of the red mud . After first filtrate the cake moisture is 35-40%, and after the second filtrate , cake moisture will be 20-25%. We have cooperated for many years and will strengthen cooperation in the near future.