Light yellow first, several white, iron content from high to low, because the production of raw materials used in the cues are different. Second, the color is c
Then vote PAM. If the proportion of the general poly aluminum concentration of 10%, ferric chloride does not need the general sewage treatment polish aluminum,
The formation of premature senility, dementia, denitrifying bacteria have a certain stimulating effect; when the mass fraction is high, then the performance of
You use the PAC alone to try to see if there is no effect. I am a water treatment material manufacturer in Guangdong
A lot of words can also use woven bags (PE, PP), etc., PE sample bag is better. If a small amount of glassware can be used