The reciprocating screw solves the core pain points in plastic processing (uneven mixing, thermal degradation, and high energy consumption) through the compound motion of rotation and reciprocation, the pin-screw block shearing system and modular design. Its technological extensibility (such as melt pump linkage and two-stage granulation) continuously drives the development of high-end polymer processing towards high efficiency, low temperature and precision, becoming a benchmark for modern injection molding and mixing equipment