Is it correct that the content of the new product development technical proposal is more specific than the product development plan?

The content of the new product development technical proposal is more specific than the product development plan. Only when the content of the proposal is more detailed and specific can the other party understand your plan more clearly and it will be adopted. The product development plan refers to an outline, and later there will be product development operation details, etc., so the new product development technical proposal The content is more specific than the product development plan.