Manufacturing microfluidic chips requires a high-precision welding process. Generally, the micro runner cannot be realized by other welding methods, or only costly other non-welding processes can be used. The use of lasers to weld the edges of the micro-runners in parallel enables the runners to be formed while welding. 　　 In addition, laser welding technology can also be used to weld larger devices, such as car taillights or similar commonly used large plastic parts. Even the welding of large products such as TV casings and washing machines is no longer a problem.

As a relatively novel joining process, laser welding technology has great potential for innovation. As the price of laser sources drops, it is foreseeable that the application of this technology will become more and more widespread. Now, ordinary consumer products are also joining the ranks of laser

　　 In order to prevent poor welding results caused by the above-mentioned reasons, it is necessary to monitor the welding current frequently. If the monitoring of welding current can be ensured, it will be easier to find other causes of changes that affect welding quality, thereby further improving the reliability of welding quality.

　　Laser welding has been used in sheet metal production for many years. With the continuous advancement of control technology and laser technology in recent years, the use of laser welding has become easier and easier to use. How to make use of the advantages of laser welding in sheet metal production requires an overall perspective to optimize the entire product manufacturing process. Adopting a friendly design suitable for laser welding will be the key to obtaining a beautiful welding surface, improving production efficiency and reducing production costs.