The quasi-continuous fiber laser developed by Raycus has higher electro-optical conversion efficiency, better beam quality and less maintenance cost, and is a perfect substitute for the existing lamp-pumped YAG laser. Due to its diverse compatibility, this series of products can be used in most YAG systems with simple modifications. It is an ideal choice for industrial applications such as spot welding, seam welding and drilling that require long pulse width and high peak value.