YOPHY is an optical filter brand based on quality and innovation. Owner Chengdu Yafei Optics & Electronics Technology Co., LTD (Chengdu Yafei Optical Instrument Factory) was established in 2009 and located in the the "Optical Base" of China. YOPHY has been focusing on the design, R&D, production and sales of camera filters, drone filters, cine filters and related optical products. The R&D team comes from the Institute of Optics and Electronics, Chinese Academy of Sciences, with decades experience in optical products.