I don't know if you have joined the washing factory as a merchandiser. If you have it, it's easy to do it. I can learn it every day at work. In fact, the process of each company is different. You just need to know the washing process. Generally speaking, washing orders do not need to know much about operation engineering. Most of them are made by the washing master. Only you can understand the washing effect. There are deep and light colors, and cats must be self-sufficient.