Hello, to apply for design, you need to submit a request, a picture or photo of the design, a brief description of the design and other documents. Where color protection is needed, color pictures or photographs shall also be submitted. In addition, when the State Information Bureau deems it necessary, it may require the applicant to submit samples or models with a volume not exceeding 30*30cm and a weight not exceeding 15kg.
There is no need to submit samples voluntarily when applying, and there is no requirement for protection and color.
I hope I can help you!