Hollow-core Anti-Resonant Fibre (HC-ARF) has a simple structure, hollow-core light guide, and wide transmission spectrum, and is mainly used in light-filler interaction, nonlinear optics, gas detection, gas laser generation, and optofluidics. Hollow-core light guide features ultra-low Rayleigh scattering, low nonlinear coefficient, and tunable disper sion, with higher laser damag e threshold, so it is po tentially useful for high-power laser transmission, UV/mid-IR light transmission, pulse compression, and optical soliton transmission. The ultra-low loss, low dispersion, and low nonlinearity of hollow core and its propagation velocity that is close to light velocity can enable the development of hollow-core fibre transmission and communication devices, laying the foundation for the construction and development of next-generation ultra-largecapacity, low-latency, and high-speed optical communication systems. As an internationally leading supplier of communication fibre products, YOFC is also committed to the research and development of HC-PCF products. Based on its independently synthesized raw materials, capillary tube manufacturing process with precise size control, and leading hollow-core fibre drawing process, YOFC has developed a series of hollow-core fibre products suitable for different fields.