Stahl Und Apparatebau Hans Leffer ( Leffer) from Germany who has vast experiences as manufacturer who design and fabricate Amine Stripper Reboiler which have heat duty over 15MW, in Acid Gas Removal Unit in Gas Separation Plant or Oil Refinery Plant or Petrochemical Plant. Leffer supplied total of 16 units of Amine Stripper Reboiler for PTT GSP # 5 & 6.