I developed a laundry detergent, and I want to go to the countryside. My dad said that I need a trademark to deliver it to my door. Is it still necessary to go to the countryside?

You need to apply for a patent. Your own research has to go through the inspection of relevant departments, register a trademark or something, and you can sell it after it is approved for listing! It's very troublesome. Besides, are you sure you have the conditions to have a baby? Generally, you apply for a patent and then wait for other companies to buy your patent. How to produce without a company? Also, are you sure that the laundry detergent you developed is innovative and valuable?