Those procedures of the ninth company of the needle factory

The subject wants to ask, "What are the working procedures of Jiulian Needle Factory?"?

1. Material preparation: ensure that the raw materials of needles meet the requirements, with good quality and high strength.

2. Needle forming: The steel wire is processed into a needle with a specific shape and tip through the processes of steel wire piercing, grinding and upsetting, so as to facilitate piercing and operation during use.