1)Certificate: NSF,ISO9001, ISO9002 2)Usage: for water and air purification, etc. 3)Delivery time:within 20 days ... granular, cylindrical, spherical and powder appearanceProduct Usage:Activated carbon is used in purifying water and air; adsorbing (collecting, recovering. separating and refining ... be provided according to the customer's special demands. Activated carbon for water purification