35 Direct business to business sales and responses to quotation request services featuring gas mixtures, pure gases, and equipment for capture, collection, and purification of gas
1 Gases in pure and mixed forms; gases for general industrial and scientific use
11 Equipment for capture, collection, transfer, and purification of gases
42 Capture, collection, transfer, and purification of gas; technical and scientific services related to capture, collection, transfer, and purification of gas