1. Warping machine: It is a device used to roll a disk of yarn neatly onto a large drum. 2. Sizing machine: It is used to sizing the whole yarn to prevent the yarn from being worn out in the weaving process. 3. Parallel shaft machine: It is used to merge yarns from several tubes onto one tube in order to achieve the required number of warp yarns. 4. Twisting machine: a machine for twisting yarns, ...