Description of circular knitting machine circular knitting machines according to the number of needle beds to sub-divided into two categories: one is the one-sided series; the other is double-sided series. In the one-sided series ordinary single machine (that is four-track or three runway \ single runway single machine), terry (or towels), flannel machine (three-wire weft insertion machine), and a single-sided Jacquard machine (there mechanical jacquard - drum, paddles, inserts, disk, etc.) (computer jacquard machines and computer jacquard transfer line), trolleys, cranes, liner machine, hanging line, artificial fur machine. In the double-sided series ordinary double-sided machine (that is 2 + 2 or 2 + 4 or 4 + 4 runways sided machine and rib machine), and a Jacquard machine (mechanical jacquard - drum, paddles, inserts, disk, etc.) (computer jacquard and jacquard transfer line machine), cotton machine, shifting circle rib machines. Knit fabric can be divided into two categories: A warp knitted fabric: its name is warp (vertical) by a group or more of the warp woven, there are common cloth mesh and Ni Shibu. B weft knitted fabrics: woven from weft (horizontal) made. Weft knitting machine - cylindrical machines and flat machine, cylinder machine is divided into single-sided and double-sided machine machine, single machine is divided into plain weave cloth, double-clothes dryers, towels, hanging lines, automatic between machine and jacquard, sided machine into interlocking machine, rib machine, between machines and automatic jacquard cloth.