Tianan site covers over 466,000 square meters, and has total staff of 450 of which the technician is 50. Tianan’s capability of phosgene is annually 50,000 metric tons. Based on phosgene, Tianan’s main products are paper making chemicals, chloroformates, isocyanates, and acyl chloride. Since 2011, Suzhou Tianma Specialty Chemicals has been the majority shareholders of Tianan. Aiming more professional, environment friendly, and energy-efficient, based on the strong ability of R&D and special facility, improving itself both in GMP manufacture and non GMP industrial manufacture, Tianan’s products will be more multifarious in the future. Also, Tianan offers custom synthesis and tailor made service for phosgene derivatives. Since 2013, much investment was performed in Tianan's production facility to ensure the whole running condition is safe, stable, long term, and perfect.