QC服务（质量控制服务）是一个检查和确保产品或服务达到特定质量标准的过程。它包括检查、测试，并确保一切在到达客户之前正常工作。这有助于防止缺陷并确保客户满意。

QC Service (Quality Control Service) is a process to check and ensure that products or services meet certain standards of quality. It involves inspecting, testing, and making sure everything works as it should before reaching the customer. This helps prevent defects and ensures customer satisfaction.