The first old factory was established from 1958 until 1997. During this period, the production of purple sand products is a good process from good to best-average-poor. At the beginning of the factory, all outstanding experts were gathered for production and export to earn foreign exchange, which was booming and finally became vulgar, especially during the ten-year Cultural Revolution! Almost give up production. It is better to start production after the Cultural Revolution, but at this time, many experts are gone and the product level is not high.