Enviornmental
| Wed 14 Oct 2026
Beijing, Oct. 14 -- Chinese Patent for Steel Slag Sewage Treatment Filter Press has been issued to Qingdao Shenfei Anda Environmental Prot Materials Co Ltd. This invention was developed by Que Elong, Liu Jin, Song Yun Hee, Geng Xinyu, Li Defu, Li Dong, Zhang Xinyi, An Keguang, Zhao Xiugang, Li Xia, Xia Xiuwei, Wang Wanhe, Zhang ..