Where can I buy liquid nitrogen in Wanzhou, Chongqing?

Chemical plants, gas markets, hospitals, beauty salons, animal husbandry stations and gas stations can all be bought. Liquid nitrogen is dangerous, so a special liquid nitrogen storage tank must be used. Liquid nitrogen: liquid nitrogen. It is inert, colorless, odorless, non-corrosive, non-flammable and extremely low in temperature. Nitrogen constitutes most of the atmosphere. It is inert and does not support combustion. A large number of endothermic contacts during vaporization lead to frostbite.