Nanjing JILONG started in 1993, and its optical fiber fusion splicer OTDR ranks among the top three in the world.The main products of Jilong Company include optical fiber fusion splicer, OTDR optical time domain reflectometer, optical fiber cutter and optical fiber measuring instrument, ODN transmission, optical fiber cable, etc.As the main drafter of the new national standard for optical fiber fusion splicers, Jilong has accumulated more than 100 patents, and is deeply trusted by operators such