1, 3M: Fortune 500, internationally recognized pioneer in R&D, with rich products and continuous innovation.
2. Bluestar: a well-known enterprise in the domestic industrial cleaning industry, which is affiliated to China National Chemical Corporation and participates in the formulation of technical standards in various industries.
3. knowledgeable person: starting with 1927, it is a world-famous brand of automobile antifreeze, which belongs to FRAM Group of the United States.