Ningxia Biyuan Activated Carbon Co., Ltd. sells medical stone filter media with properties of adsorption, solubility, regulation, biological activity and mineralization. It adsorbs free metal ions. After soaking in water, medicinal stone can leach out nearly 20 kinds of trace elements. It can stabilize and improve the balance of physical properties of the soil and therefore has advantages over other soil improvers. Because of this, outdoor stone growing cabbage has received extensive attention. Maifan stone can reduce the amount of fertilizer used, reduce the use of soil conditioners, and economically and efficiently improve soil quality and protect the environment. Accelerate crop growth, improve crop quality, increase yield Ningxia Biyuan Activated Carbon Co., Ltd. is a professional manufacturer and has about eight years of different filter media production and domestic historical trade. Now we are committed to developing our international trade. We adhere to the principle of "integrity management, quality service". Our employees are professional and sincere, and our prices are fair. Look forward to working with you.