Hangzhou Zhongtai Cryogenic Technology Corporation (hereafter called as Zhongtai), a filiale of Zhejiang Zhongtai Group, is a Provincial High-New Tech Enterprise. Zhongtai is specialized in the development, design, manufacture and technical service of cryogenic technical equipments, especially the design and fabrication of cryogenic plant in chemical and energy industries. The key products of Zhongtai are aluminum plate-fin heat exchangers, columns and cold box, as well as spiral-wound heat exchanger. Zhongtai is provided with advanced design ability, first-class facilities and perfect quality control system. Zhongtai has more than 50 patents regarding two-phase flow distribution, liquid nitrogen purifying syngas, coke oven gas into LNG, methane and argon recovery from synthetic ammonia tail gas etc.