The roving is drawn and drawn to the required fineness, and twisted to form a spun yarn with a certain twist and strength, which is wound on the bobbin.

The jute rapier loom relies on the rapier rapier to drive the weft, and the jute loom is a developed model of Tongda Company. Mainly used for packing grain, packing agricultural products such as coffee beans.

Rapier loom is a shuttleless power loom. The range of weaving is relatively wide, and hemp, cotton, chemical fiber, and ply yarn can basically be adapted. The price is moderate, the maintenance is relatively simple, and the accessories are cheap.

TONGDA intelligent ring spinning frame, a new generation basic machine which is leading the development trends with its entire performances reaching international advanced level, integrates quick-installing technology, quick-doffing technology, dual-suctioning technology at both headstock and tailstock, and intelligent spinning expert system. Its energy consumption is reduced by 10% comparing to the current ring frames. Has four patents: new spinning machine lubrication device patent; Patent of improved spinning frame; Spinning frame transmission device patent; Patent of electronic CAM system for spinning frame