Youshi (Beijing) Technology Co., Ltd. focuses on providing high-quality technology products from abroad and is committed to serving university, research institute, and enterprise users. The main products include fluorescent light sources, terahertz spectrometers, autocorrelation instruments, frequency multipliers, mobile platforms, etc. The cooperative brands include Cairn from the UK, Minioptical from the US, Photonic from Olidi, Bakman from the US, Ludl Electronic Products from the US, and Burger Research from Canada.