Liming Institute's high-purity sulfur hexafluoride products have passed the strict test, cleaning and etching test of a famous enterprise in Taiwan, China. The feedback test report shows that the products of Liming Institute fully meet the "5N" index, and the product quality has reached the international advanced level. Some of the indexes are also ahead of the high-purity sulfur hexafluoride products of enterprises in the United States, Japan, South Korea and other countries。