Group 1 - The 2025 Changchun International Optoelectronic Expo, also known as the "Changchun Light Expo," opened on June 10, featuring over 800 exhibitors from countries including China, the USA, the UK, Germany, Japan, Italy, and South Korea, showcasing cutting-edge technologies and products in the optoelectronic information field [1][6] - The expo includes six major optoelectronic industry clusters and 15 industry directions, with an exhibition area of 80,000 square meters, highlighting both static displays and dynamic showcases of low-altitude flight and unmanned driving technologies [3][5] - A technology company from Zhejiang presented a multispectral vegetation monitoring instrument that uses intelligent algorithms to analyze plant growth and pest conditions, capable of covering a radius of 2 kilometers and surveying over 10,000 acres of farmland in one hour, indicating strong demand from farmers amid China's push for high-standard farmland construction [3][5] Group 2 - A CNC equipment company from Shandong showcased high-precision laser cutting equipment with a deviation of only 0.01 millimeters, aiming to penetrate the automotive parts market in Changchun, which has a well-developed automotive manufacturing industry [5] - The Changchun Institute of Optics, Fine Mechanics and Physics displayed breakthroughs in fields such as photonics, applied optics, optical engineering, and precision machinery, while also presenting multiple achievements in "light+" sectors like automotive, agriculture, healthcare, and embodied intelligence [5][6] - The Light International Conference is being held in conjunction with the Changchun Light Expo for the first time, with nearly 1,000 academicians and experts from 26 countries attending, alongside the Chinese Optical Society Academic Conference [6]