It is mainly used in food packaging, food preservation, medical packaging, medical ventilation and medical transportation atmosphere. Normally, the nitrogen produced must be treated by sterilization, dust removal, water removal, etc. to meet the special requirements of the industry. The food industry has low requirements for nitrogen, many of which can meet the requirements with a purity of more than 98%. The pharmaceutical industry usually requires nitrogen with a purity of 99.9%.

Deep hypothermia and cryotherapy for scientific research and medical treatment.

Pharmaceutical and health raw materials, nitrogen-filled packaging and transportation of drugs, as well as mothproof and antiseptic protection of Chinese herbal medicine.

Beer beverage process gas, preservation and storage.

Nitrogen-filled storage and preservation of traditional Chinese medicine (such as ginseng) in the pharmaceutical industry; Nitrogen filling of western medicine injection; Nitrogen filling of storage and containers; Air source for pneumatic conveying of medicine

Pharmaceutical nitrogen equipment (nitrogen purity 99.99%) is a pharmaceutical nitrogen generator developed according to GMP specifications based on the experience of professional research and development of pressure swing adsorption nitrogen generator in recent years. Compared with cylinder nitrogen (or liquid nitrogen), it has low operating cost, stable nitrogen purity and simple operation.

The food industry is used for food preservation and storage, food drying and sterilization, and food rapid freezing.

Nitrogen-filled storage and preservation of fruits, vegetables and tea are also the most advanced methods. This method can slow down the metabolism of fruits, vegetables, vegetable leaves, etc. in the environment of high nitrogen and low oxygen, like entering the hibernation state, inhibit afterripening, and thus keep fresh for a long time. According to the test, the apples stored with nitrogen are still crisp and refreshing after 8 months, and the food is fresh: the storage and preservation of grains, fruits, vegetables, etc. with nitrogen; Nitrogen-filled fresh-keeping packaging for meat, cheese, mustard, tea and coffee; Nitrogen filling and oxygen removal for fruit juice, raw oil and jam; Purification and covering of various bottles of wine

The use of nitrogen to keep grain in dormant and anoxic state and slow metabolism can achieve good effects of insect prevention, mildew prevention and deterioration prevention. The grain is not polluted. The storage of rice, wheat, barley, corn, rice and other grains with nitrogen exhaust air can prevent moths, fever and mildew, so as to ensure the quality of summer. In this method, the grain is tightly sealed with plastic cloth, pumped into a low vacuum state, and then filled with nitrogen with purity of about 98% until the internal and external pressure is balanced. This can make the grain pile anoxic, reduce the respiratory intensity of the grain, inhibit the propagation of microorganisms, and the borers will all die within 36 hours due to hypoxia. This method of reducing oxygen and killing insects can not only save a lot of costs (about one percent of the cost of fumigating with highly toxic drugs such as zinc phosphide), but also maintain the freshness and nutritional value of food and prevent bacterial infection and drug pollution.

The preservation cost per kilogram of apples is about 10 cents. Nitrogen-filled storage can greatly reduce the loss of fruits in the peak season, ensure the supply of fruits in the off-season market, improve the quality of exported fruits, and increase the income of foreign exchange

The tea is packed by air extraction and nitrogen filling, that is, the tea is put into a double-layer aluminum-platinum (or nylon polyethylene aluminum composite foil) bag, the air is extracted, the nitrogen is injected, and the seal is sealed. After a year, the tea is fresh, the tea soup is clear and bright, and the taste is pure and fragrant. Obviously, it is much better to use this method to keep tea fresh than vacuum packaging and frozen packaging.

At present, many foods are still in vacuum packaging, frozen packaging, vacuum packaging is easy to leak, frozen packaging is easy to deteriorate, and vacuum nitrogen filling packaging is not good