RECI HQ series high-power single-mode continuous fiber lasers are completely independently developed and produced by thermal stimulation light. By solving bottleneck issues such as mode instability (TMI), stimulated Raman scattering (SRS) and poor beam quality, this laser increases the average output power of a single resonator and single transverse mode to 12,000W. This series of products integrates high average power, multiple anti-reflection, high-quality beam quality and high electro-optical conversion efficiency. It is widely used in fields such as fine cutting, metal welding, surface treatment, 3D printing and rapid prototyping. Especially in thick metal plate cutting, this laser not only has fast cutting speed, but also has fine cutting seams and bright cross sections. It has significant advantages over other similar lasers on the market.