In the 1990s, the domestic fiber fusion splicer industry was a blank, under the long-term monopoly of imported brands, the price was as high as over 300,000. In 1993, in order to break the monopoly of foreign brands, Kelong Communication Technology Company, the predecessor of Nanjing JILONG, was established to develop and produce the first generation of fused fiber machine KL-100, which was half of the price of Japanese brands. Since then, JILONG has opened the door of independent research and development of domestic fused fiber machines, which has driven the development of the whole domestic fusion splicer industry for 30 years.

Now, JILONG Company has become the representative of domestic welding machines with "large scale, many patents and complete models". After 30 years of painstaking exploration of optical communication, JILONG has developed into a professional supplier of global optical communication products and solutions. At the same time, it also helps the construction of domestic 4G and 5G networks and makes positive contributions to the development of global optical communication industry.