After acid leaching, the coal gangue slag after firing is naturally cooled to the slag field and fed into a ball mill for grinding, and the powder material grou
Polyacrylamide, basic aluminum chloride, ferrous sulfate, aluminum sulfate, polymeric ferric sulfate and the like. Although these things can not eat (nonsense)
, Aluminum chloride: colorless and transparent crystal or white and light yellow crystalline powder. 2, polyaluminium chloride: Polyaluminium Chloride, due to t
The lack of contraceptive knowledge after abortion leads to a high rate of repeat abortion, with a higher incidence of miscarriage complications and sequelae. R
Now Henan Gongyi PAC due to environmental problems, have been discontinued on July 15, now want to buy PAC does not buy well, as far as I know, Henan Jiarun env