PVDF-3-35-3-35-10S,PVDF-3-55-3-55-10S,PVDF-4-70-4-70-10S,PVDF-4-35-4-35-10S,可变吐出量叶片泵
PVDF-3-35-3-35-10S,PVDF-3-55-3-55-10S,PVDF-4-70-4-70-10S,PVDF-4-35-4-35-10S,可变吐出量叶片泵