... quality d)factory direct selling e)large quantity and low price Poly Aluminium Chloride(PAC) Appearance: Yellow or reddish yellow,in powder and ... treatment; industrial wastewater and urban sewage treatment; and treatment of the products containing toxic heavy metals and fluorine-containing ... , make the solid dissolved, one ton of PAC can handle 10,000-100,000tons of source water.Features: 1. to form ...