The multi-cavity needle-valve hot-runner system combines the two characteristics of precise glue control by the needle-valve and multi-cavity synchronous molding. It is the mainstream hot-runner solution for plastic parts with high cavity numbers, high appearance requirements, and high-speed mass production. It is widely applied in fields such as medical, electronics, packaging, and daily necessities. Relying on the precise glue control of the mechanical needle-valve, the multi-cavity needle-valve hot-runner system has advantages such as gate-free marks, no wire-drawing or drooling, balanced multi-cavity molding, short cycle times, material-saving and environmental-friendliness. It is compatible with various plastic raw materials and high-precision molds with hundreds of cavities. It is easy to maintain and has a long service life. It is widely used in industries like medical, electronics, and packaging, helping enterprises improve efficiency, reduce costs, and achieve automated and high-efficiency production.