Guangzhou Dayilong Packaging Machinery Co., LTD. (Tech-Long, 002209) was founded in 1998, with its headquarters located in the Guangzhou Economic and Technological Development Zone. It is a leading provider of complete liquid packaging line solutions. Guangdong Guozhuo took the spectrometer project as a breakthrough point to control the quality for the acceptance of Dayilong materials, and the customer passed the acceptance of the aseptic production line.