... 4.200W laser power 5.ISO9001 Jewelry laser spot welder,jewelry welding machine Jewelry Laser spot welder is used for ... hour continuous operation, with stable operating performance, and free from maintenance within 10000 hours. 6. Personalized design in compliance ... , little affect area, quality welding, welding points free from pollution, and energy saving.Specifications Model ML-W200Max.average power ...