Dlt series beam combined laser tube, adopting our patented technology, with integrated designed combiner device, improved the beam quality of convergent light energy. Its beam spot pattern is stable. Each set can be synchronous controlled and continual adjusted from 50-280w/50-300w. Its lifespan is beyond 10000 hours because of kovar sealing technology and catalyst inside. Its cover is fixed with protect device in case of water-break. It can be used for 3mm stainless and 18mm dia board cutting.