Where can I buy liquid nitrogen in Guoyang County, Anhui Province? Please let me know! thank you

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.