... %),F7(80-90%),F8(90-95%),F9(>95%)tEMPERATURE:90 maximum in continus serviceMaximum pressure drop:450 PaMoisture resistance<100% RHGuangzhou AK Filter Co.,Ltd has ... .In 2003,American filiale was established.In 2003,Suzhou huilong filter limited was established.In 2005,Vietnam office was established.In 2006,Guangzhou ...