With cam curve after being specially designed,our 4-shuttle circular looms can achieve the energy economy greatly; meters and autonatic stopping devices to detect warp/weft breaking and monitor weft end ing can be fixed to the looms . Furthermore,all the looms adopt brushless shuttlesholistic shuttles  and bi-directional adjustable shuttles Hereinto,the small-size 4-shuttle circular loom can weave the sacks with the lay-flat width of 200-550mm,and the lay-flat width of 350-1000mm which fills up the gap in our national market.