National regulations, yes. The product name and logo of brassinolide must indicate that it is 24-epibrassinolide or 28-epibrassinolide according to national regulations. That is, it is written on the trademark that it is strictly controlled by the country due to national regulations. real. A trademark is a sign used to identify and distinguish the source of goods or services. Any mark that can distinguish the goods of a natural person, legal person or other organization from the goods of others, including words, graphics, letters, numbers, three-dimensional signs, color combinations and sounds, etc.