1) Manual preparation of dry ice: carbon dioxide cylinder+small manual dry ice maker can obtain carbon dioxide cylinder by purchasing liquid carbon dioxide at gas operation station, connect KBS small dry ice maker, and open the valve to produce dry ice. It has low cost and simple operation, and is very suitable for users of hotels, restaurants and bars for cloud effect, laboratory low temperature test and mechanical cold assembly.

(2) making dry ice at home: carbon dioxide fire extinguisher+cloth bag Prepare a cloth bag, cover it at the outlet of carbon dioxide fire extinguisher, turn on the switch of the fire extinguisher, and a small amount of white "snowflakes" will be formed in the cloth bag near the nozzle, which is dry ice, but the amount is very small, so it is suitable for teaching classes and learning related knowledge of dry ice.

(3) Fully automatic dry ice preparation: carbon dioxide dewar or storage tank+fully automatic dry ice maker. Buy liquid carbon dioxide dewar or storage tank in the market, and buy liquid carbon dioxide in the gas company. According to the shape and output requirements of dry ice, choose KBM granular dry ice machine or KBK block dry ice machine. The dry ice produced by this automatic dry ice machine has high density, good quality and large output, and is widely used in catering smoke effect, refrigerated transportation, cooling preservation and industrial dry ice cleaning, and is very suitable for merchants selling industrial dry ice production.