RJ is suitable for narrow fabric Jacquard weave manufacturing, the pattern chain system is easy to disassemble and runs quietly. The frame is supported in the outward-expanded anchoring manner. It greatly improves the equilibrium and stability of the shedding frame. With precise central pillar designs, to stabilize the yarn feeding, the Belt feeding device helps adjust yarn tension. Block holder works with crank to up and down, to keep Jacquard hooks running stably. Module components are convenient to replace. Electric controller stable, easy, and flexible operation. ABS covers are eco-environment. The parts are durable and precisely manufactured. High interchangeability and compatibility and easy compatibility and easy adjustment and rapid parts supply.