The writing steps of the standard clothing fading investigation report are as follows:

1. Under what background, explain why we should study the fading problem of standard clothing and clarify the purpose of the study.

2. Introduce the methods used in this study, such as experiment, field survey and questionnaire survey. The corresponding advantages and disadvantages are explained, and the applicability and reliability of the method are analyzed.

3. The data sources used to analyze the fading problem of standard clothes are introduced in detail, including survey data, statistical data and literature, and the corresponding data processing methods are explained.