Huahai Qingke Co., Ltd. has recently been granted a patent, titled "Online Measurement Compensation Method, Film Thickness Sensor, and Equipment for Metal Film Thickness," with the authorization number CN116423378B. This patent, which was applied for on April 17, 2023, was officially authorized on March 14, 2025. The core objective of this patent is to enhance the precision of online metal film thickness measurements by minimizing errors through innovative compensation techniques.