Before the 14^th china international exhibition on Gases technology,equipment and application,our company signed one contract with  Red mountain Energy corporation  for export one 15000 NM3/h ASU to Russia.This equipment is the first set of domestic which using mixed tower technology to produce rich oxygen,last year SOPC also exported one set of 12000 NM3/h ASU to the Commonwealth of the Independent States,This ASU owned the biggest capacity during the chinese ASU in this area.