The registration address of tianjin zhengjin science and technology ltd. Is located on the second floor - 127, 5th floor - china guan village science and technology park, 5th floor - market supervision authority of tianjin economic technology development zone, represented by legal persons, and covers the development and sale of yakilian products; the development and sale of aklik materials, organic glass materials, advertising and decoration materials, office supplies, organic glass products, plastics, crafts, experimental instruments, models, hardware, electricity, electronics sales; advertising operations; flat design; the making of advertising light boxes, signs, signs and tablets; interior and exterior decoration works; and exhibition services. (projects subject to legal approval may not operate without the approval of the relevant department)