acid 90% white powder water treatment chemical Best quality Prompt shipment acid Specification: Active chlorine %≥90.0Moisture %≤0.50PH(1% sol)2.7-3.3Storage:kept in a light-proof,well-colsed,dry and cool place.Service we can provide:1. Mixed container, we can mix different items in one container.2. Quality control, before shipment, free sample for test. after shipment, keep sample for 3 years3. ...