... flexibility, economy and energy efficiency of a modern heating system. There are no emissions, no flammable contents and ... . Available Date-Expired Date ISO9001:2008 Shanghai Audit Center of Quality System, CNAS 00309Q20533R0M Scope: Design and development, production ... 18 --- 2012/07/17 ISO14001:2004 Shanghai Audit Center of Quality System, CNAS 00309E10140R0M Scope: Design and development, production ...