We, Tangshan Xinwei Co., Ltd is a group company,who has been in water treatment materials for more than 15 years. Main products are activated carbon,green sand,PAC,PAM,silica sand filter etc.Also have growing medias like clay pebbles, perlite, vermiculite, pumice stone. Our company has been exported to many different countries. Main market is USA, Canda, Singapore, South Africa, Mid-east countries. We have own factories. so we are able to provide good quality products with reasonable price. If you want to find a supplier who is professional to give you most reasonable solution, please don't hesitate to contact us,our company policy is "on call 24 hours for your service" .