Introduction: A customer in Thailand found us on Google and asked if we could provide a quick shutdown installation solution. He told us that Thailand follows American safety standards and must install quick shutdowns when installing solar systems. This can ensure that the voltage and current of the solar device are quickly turned off in the event of a dangerous situation, ensuring the safety of maintenance personnel and fire personnel. The customer told us that the solar panels he installed had a total of 10 panels, and we recommended to him the design of our one-tow quick shut-off device. One shut-off device could connect two panels, so that the customer only needed five quick shut-off devices. After the installation, the customer is more assured about the safety of their solar system, and also increases their trust in our BLD company, laying a solid foundation for future cooperation.