The classification and advantages of the spring terminal blocks: Spring wiring terminal block and its family of products, is now extended to all low-voltage electrical equipment, as the lugs, the product is divided into two categories: weak and low voltage small currentclass (500V, 10A or less); one category: low-voltage high-current class (700V, 250A). The product compared with the original model terminal has the following advantages: reliable anti-loosening performance: the wires can automatically adjust the shock force of the Ministry, to prevent accidents caused by the terminal wiring loose. (2) carrying capacity of 150% of the original model. Very convenient wiring and removal of stitches structure from time to re-use screwdriver pressure wiring, wiring efficiency can be increased four times. (4) The structure of smart combination of convenience. (5) can be set short-circuit protection with current-limiting protection. (6) low cost, simple manufacturing process. The product for the new generation product of the original model, the cost and the original models are flat or slightly smaller, better and reliable than the original product more, a great market.