Darts, one of the most common hidden weapons on the ancient Chinese battlefield, was said to have originated in the Western Regions. In the Northern Song Dynasty, the monk Xing Yuan from Sichuan fortunately got this technique and then passed to the Central Plains.

According to some information, at present, the wire-cut electrical discharge machining industry in China takes on a form of fragmented world in China. It includes a lot of well-known EDM machine tool manufacturers and some centralized EDM machine tool industrial clusters. 

"As for medium speed wire cutting machine tool, the cutting speed, machining accuracy and its price are all at the middle level so that most enterprises will choose it as their machine tools. To be more specific, in fact, the cutting speed of WEDM-MS machine tool is not slower than that of the WEDM-HS machine tool, but higher than that of the WEDM-HS machine tool. 

Analysis of latest tungsten market from ChinaTungsten Online

Tungsten ore prices have been maintained stability recently supported by production costs and reduced risks. While downstream factories still do not have large demand for tungsten raw materials, transactions are at a relatively low level. High-grade tungsten concentrate prices hovers around $15,384.6 per ton.