With the rapid development of the pharmaceutical industry, nitrogen has been more and more widely used in the production of drugs, in addition to large infusion, water needle, powder needle, freeze-drying agent and oral liquid preparations of the production needs of nitrogen filling skills, synthetic drug nitrogen maintenance, bioengineering drugs with pure nitrogen block nitrogen with traditional Chinese medicine to prevent mold, so nitrogen supply methods will be more and more attention. The traditional cylinder nitrogen supply method and liquid nitrogen tank gasification nitrogen supply method have been difficult to adapt to the needs of today's pharmaceutical industry, especially GMP and cGMP for nitrogen directly touched with drugs, its preparation process must have the emphasis of specification and traceability, so that high-purity nitrogen machine and its skills came into being.

With the rapid development of the pharmaceutical industry, nitrogen has been more and more widely used in the production of drugs, in addition to large infusion, water needle, powder needle, freeze-drying agent and oral liquid preparations of the production needs of nitrogen filling skills, synthetic drug nitrogen maintenance, bioengineering drugs with pure nitrogen block nitrogen with traditional Chinese medicine to prevent mold, so nitrogen supply methods will be more and more attention. The traditional cylinder nitrogen supply method and liquid nitrogen tank gasification nitrogen supply method have been difficult to adapt to the needs of today's pharmaceutical industry, especially GMP and cGMP for nitrogen directly touched with drugs, its preparation process must have the emphasis of specification and traceability, so that high-purity nitrogen machine and its skills came into being.