Hangzhou Zhongtai Cryogenic Technology Corporation (hereafter called as Zhongtai) is a National High-New Tech Enterprise, listed on Shenzhen Stock Exchange. The Stock Code is 300435.Zhongtai is specialized in the development, manufacture and technical service of cryogenic technical equipments, especially cryogenic plant for chemical and energy industries. The key products of Zhongtai are cold box and aluminum plate-fin heat exchangers and columns. Zhongtai is provided with advanced design ability, first-class facilities and perfect quality control system. Zhongtai has more than 60 patents regarding two-phase flow distribution, propane dehydrogenation cold box separation system and liquid nitrogen purifying syngas unit etc., in which 14 are invention patents.