What does double zeroing mean?

Technology zeroing and management zeroing.

"Quality problem zeroing" refers to the activity of pointing out the quality problems that have occurred, implementing them one by one according to the five standards of "clear process, clear responsibility, implementation of measures, serious handling and perfect regulations" in management, and forming a management zeroing report and related documents.

1 and the five requirements of technology zeroing: "accurate positioning, clear mechanism, recurring problems, effective measures, and inferences from one example to another."

2. Five requirements for zero management: clear process, clear responsibilities, implementation of measures, serious treatment and improvement of regulations.