The start-up board adopts the principle of mobile release and makes the enclosed compound needle effectively realize yarn picking-up and sloughing. It is complementary to yarn clip device to fully make use of their functions, reducing yarn wastage and improving productivity. Needle pitch: 5G, 6G, 7G, 8G, 9G, 12G, 14G, 15G and 16G. Knitting width: 48, 52 and 56 inch. Control system: 1. Screen: adopting LCD industrial display and figure interface; USB input device; 32M internal storage. The latest system has 1GB internal storage, able to storage a great number of design files which can be fetched out for use at any time according to production requirements. 2. Monitoring screen, able to display various operating parameters and be adjusted during machine running, maximally convenient for operation. 3. Free platemaking system is intuitive, easy to understand and convenient for upgrading. Rolling system: programmed instruction, controlled by torque motor, optional 24-segment drawing force and adjustable scope: 0-99. Transfer: triangle compound design, single or double-system can independently work and one system can transfer the stitch while the other system keeps knitting, realizing efficient production. Needle bed movement: controlled by AC servo motor, optional 24-segment, maximum speed: 1.2M/S. stitch system: controlled by stepping motor, 24-segment density, adopting subdivision technology, 0-650°adjustable scope, able to more accurately control the length of knitwear. Knitting system: single frame and double systems. Needle reading: advanced encoder.