It is the same as 20mW green green laser pointer

It is the same as 20mW green green laser pointer 
The car companies need to productivity improvement, often only by increasing the number of electron beam welding equipment and increased manpower to meet the needs of production, so the comprehensive comparison of down, the economy of the electron beam welding has been damaged. Front of exposition, we can see that the electron beam welding in the ultra-high-power (30kW) and a large penetration depth (50 mm or more) has an irreplaceable position in the welding. In particular: the field of power generation equipment, petrochemical equipment, mining machinery, heavy vehicles, aerospace, nuclear equipment and shipbuilding industry, electron beam welding is still the preferred technical solution. The typical application is the welding of the reactor substrate and the steam turbine rotor shaft bearing parts, penetration of 300mm or more. The power, brightness and laser range of green laser pointer are strong and powerful enough.
Other arc welding processes include atomic hydrogen welding (Atomic hydrogen welding, AHW), carbon arc welding Carbon the arc welding (CAW), electroslag welding (Electroslag welding, ESW), gas welding (Electrogas welding, EGW,), stud welding (Stud welding). The use of gas welding metal parts [edit] the most common gas welding, gas welding process is gas welding (Oxy-fuel welding), also known as the oxyacetylene flame welding. It is the oldest and one of the most common welding processes, but has been rare in recent years in industrial production. It is still widely used in the manufacture and maintenance of pipelines, for the manufacture of certain types of metal art. The problem might be met during the production of  green laser pointer .
Outdoor jobs such as building construction and repair work, often using the manual metal arc welding. Need to protect the gas welding process is usually carried out outdoors, because the disorderly flow of air will result in welding failure. Manual arc welding can also be used for underwater welding, welding the hull, underwater pipelines, offshore operations platform. Underwater welding the more commonly used process to flux cored arc welding and so on. Welding in space is possible: In 1969, Soviet cosmonaut for the first time in a vacuum environment test manual arc welding, plasma arc welding and electron beam welding. In the decades since then, space welding technology has been a great development. Today, researchers are still trying different welding technology transfer to the vacuum. The assembly line is to ensure the smooth and timely production of green laser pointer .