Ningxia biyuan activated carbon co., ltd. Sells coal-based bulk granular activated carbon for the removal of hydrogen sulfide and uses coal-based bulk columnar activated carbon for the removal of hydrogen sulfide: Mainly used for waste gas treatment, such as h2s, co, co2, n2. Toxic gas purification, natural gas treatment, industrial and domestic water purification, solvent recovery, etc. 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.