By analyzing the way of making and controlling the quality standards of flax spinning factory,s processes apporaching the importance on the quality index of every process to the quality of final product.

The control of the chemical reaction of boiling and bleaching is more difficult in the flax spinning,because its affected factors are very variety,so the chromatic difference is brought about.

Improving the quality of flax spinning process, and obtaining good benefit by studying and using the round tail flat needle on the base of different properties of the round pin in spinning.

Introducing the technology of the blended linen yarn by the medium frequency rotor spinning machine.

Researching the principle,advantage and defect of the fixed and rotating stoving chest for improving the drying result of wet_spinning linen yarns.