Our positive conjugated cam shedding devices have been widely applied to various water-jet looms, air-jet looms, rapier looms and so on. They are capable of weaving plain, twist, satin as well as other fabric weaves within 12 weft picks; 147 patterns have been developed for them; stoppage angle can be designed based on respective process requirements of different fabrics. Our devices, with the advantages of fast speed, high efficiency, energy saving and low maintenance cost, are more suitable to wide and heavy fabrics compared with plain looms and other dobby shedding devices.