There are actually two types of bag making machines for various convenience bags (tote bags used for buying vegetables at the wet market). One is called a heat sealing and cold cutting bag making machine (there are semi-automatic and Fully automatic), one is called heat sealing and hot cutting bag making machine (semi-automatic and fully automatic). The so-called semi-automatic means that the bags cut out by the bag making machine are sealed at both ends, and then nailed together one by one, and then taken Just go to another equipment (punch) to punch out the vest opening. Fully automatic means that the automatic punching machine is connected to the bag making machine and the authentic product is formed at one time. This saves labor and the bag making machine is There are several types of models, such as single-line, double-line and four-line models for heat sealing and cold cutting, and single-channel and double-channel models for heat sealing and cutting. The prices are different. In fact, the output is more, and then For bags of different colors, you only need to buy masterbatch particles of different colors and mix them with the blown film particles when the film blowing machine is blowing the film. Then, if there are patterns or words or trademarks on the surface of the bag, you need to Just buy a printing machine and print it with ink. I hope my answer can help you, thank you!