The registered address of tin-free spring chemical products ltd. Is in room 3319, building 397 quantities road, liang creek district, no sing city. The registration authority is the administrative approval board of liang creek district, no sing city. It is represented by legal persons and covers chemical products and raw materials (which involve licensed scope and mode of operation) and high-quality organic chemical solvents, both inside and outside the country, which are subject to approval by the relevant authorities