Sidhartha Machinery Co. Offers Angular and Straight Box Stitcher. Sidhartha Machinery Co. Is an ISO 9001-2000 accredited Company. Angular and Straight Box Stitcher is used for last and final operations in box making and parts are standardized and interchangeable. The machine is capable of continuously running at high speed. Design of the Machine is universal and world famous. Angular and Straight Box Stitcher is very easy in operation, serving and repairing.