The QCW fiber laser series ranges from 75W to 1500W, with higher electro-optical conversion efficiency, better optical quality and lower maintenance cost. This series product is a perfect alternative of existing light-pumped YAG laser and is an ideal choice for spot welding, seam welding, boring and other industrial applications，which requires wide pulse and high peak out power due to its diversified compatibility and the convenience for most YAG systems to use with simple transformation. Raycus has a number of R&D teams with outstanding innovation ability and it can meet diversified demands of the customers for this series product to the greatest extent and provide specialized customized services. At present, the laser is QBH connector. This series product, with rate output power of 10-100%，electro-optical conversion efficiency higher than 25% and modulation working frequency up to 5kHz，can meet the demands of most application scenarios，has been widely recognized by the market.