The numerical control software component based on component technology refers to the ActiveX component that can complete the function of a certain module of the numerical control system. It provides the object to follow the COM protocol, the external has a unified, open interface, and encapsulates the details of the function implementation. With ActiveX technology, programmers or users can assemble these reusable software components into an application or service program. The numerical control software component can be understood as a powerful component (similar to hardware components) after integration of multiple software chips, and its functions are more diverse and more powerful. But like a hardware chip, it also has basic interfaces such as address pins, input/output interfaces, information feedback, status settings and control, status acquisition, and trigger switches, while the internals encapsulate specific details, which is a Black box, the user only needs to use it through the interface. The address pin corresponds to a unique identification of the software component in the computer, and the input/output interface corresponds to an input/output method function. If you set the return value of the input method function to an integer or Boolean variable, you can use it as feedback for the input method function. The black box encapsulates some abstract classes that describe objects. Each class has a set of related abstract data and problem implementations. Different classes can communicate with each other, thus completing a complex module function. The user obtains the functions provided by the software component through the interface method, the attribute function and the message, and can run across the network, is not restricted by a certain development language, and has good portability. (Finish) Optical Brightener agent, whitening agent OB-1, Optical Brightener Hebei Fengse New Material Technology Co.ltd. , https://www.fengsechemicals.com