2017年11月，時任國務院副總理汪洋曾在《人民日報》撰文指出，自由港是設在一國（地區）境內關外、貨物資金人員進出自由、絕大多數商品免征關稅的特定區域，是目前全球開放水平最高的特殊經濟功能區。

華中科技大學經濟學院自貿區研究中心執行主任陳波對第一財經記者表示，自由貿易港要構建的制度體系和政策體系，就是要圍繞貿易零壁壘、跨境資金自由流動、人員往來自由化、服務業整體開放這四個方面，實現上述定位。

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先導式三通比例減壓閥   3DRE(M)E...6X...
R900551330 3DREP6C-10/25A24NK4V
R900573750 3DREP6C-10/25A24N9K4V
R900700593 3DREPE6C-22/16EG24N9K31/A1V
R900717553 3DREPE6A-22/45EG24K31/A1V
R900917218 3DREP6B-10/25A24N9K4M
R900925013 3DREPE6B-22/45EG24N9K31/A1V
R900925484 3DREPE6C-22/25EG24N9K31/A1V
R900925526 3DREPE6A-22/25EG24N9K31/A1V
R900925527 3DREPE6C-22/25EG24K31/A1V
R900925707 3DREPEB6C-22/25EG24N9K31/A1V
R900926631 3DREP6A-10/25A24N9K4M
R900926984 3DREPE6C-22/25EG24N9K31/F1V
R900929529 3DREP6C-22/25EG24N9K4/V
R900929865 3DREPE6B22/45EG24N9K31/A1V=LB
R900931050 3DREPE6B-22/25EG24N9K31/A1V
R900932154 3DREP6C-22/25EG24K4/V
R900943289 3DREPE6A-22/45EG24N9K31/A1V
R900943943 3DREPE6B-22/25EG24N9K31/F1V
R900944231 3DREP6C-22/16EG24N9K4/V
R900945686 3DREP6A-22/25EG24K4/V
R900945801 3DREP6A-22/25EG24N9K4/V
R900947444 3DREP6C-22/45EG24N9K4/V
R900947955 3DREP6B-22/25EG24N9K4/V
R900954411 3DREP6A-22/16EG24K4/V
R900954417 3DREP6A-22/25EG24K4/M
R900954418 3DREP6A-22/45EG24K4/M
R900954420 3DREP6C-22/25EG24K4/M
R900954423 3DREPE6A-22/25EG24K31/A1M
R900954427 3DREPE6C-22/25EG24K31/A1M
R900954474 3DREP6A-22/16EG24K4/M
R900954828 3DREP6A-10/45A12NK4M
R900955784 3DREPE6C-22/25EG24N9K31/A1M
R900955796 3DREP6C-22/45EG24N9K4/M
R900955803 3DREP6A-22/25EG24N9K4/M
R900955853 3DREPE6C-22/25EG24K31/F1V
R900955887 3DREP6C-22/25EG24N9K4/M
R900956100 3DREP6C-22/16EG24N9K4/M
R900956182 3DREPE6B-22/25EG24K31/A1M
R900956636 3DREP6B-22/25EG24N9K4/M
R900958848 3DREPE6C-22/25EG24N9K31/F1M
R900959129 3DREP6A-22/45EG24N9K4/V
R900959338 3DREPE6B-22/25EG24K31/F1M
R900959741 3DREP6C-10/45A24N9K4M
R900960161 3DREP6B-10/45A24N9K4M
R900962045 3DREP6A-22/45EG24N9K4/M
R900963713 3DREPE6C-22/45EG24N9K31/A1V
R900966991 3DREP6C-10/45A24N9K4V
R900967164 3DREPE6A-22/25EG24K31/A1V
R900967209 3DREP6A-22/16EG24N9K4/V
R900970698 3DREPE6C-22/45EG24N9K31/F1V
R900975912 3DREPE6A-22/25EG24N9K31/F1V
R900978110 3DREPE6A-22/45EG24N9K31/F1M
R901015676 3DREPE6C-22/16EG24N9K31/A1M
R901069746 3DREPE6A-22/25EG24K31/F1M
R901123196 3DREPE6A-22/16EG24N9K31/A1V

4WRA6E07-22/G24N9K4/V-589

4WRA6E07-22/G24N9K4/V-589
先導式三通比例減壓閥   3DRE(M)E...62...
R900705197 3DREME10P-62/315YG24K31V
R900961474 3DREME16P-62/200YG24K31V
R900964169 3DREME16P-62/200XYG24K31V
R900977647 3DREME10P-62/200YG24K31V
R901026376 3DREME10P-62/200XYG24K31V
R901103660 3DREME10P-62/3152YG24K31V
R901165931 3DREME16P-62/200YG24K31V-10
R901218097 3DREME10P-70/200YG24K31F1V
R901229977 3DREME10P-70/200XYG24K31A1V
R900948621 3DREE10P-62/200YG24K31V
R900954517 3DREE10P-62/100YG24K31V
R900954523 3DREE16P-62/200YG24K31V
R900942951 3DREM10P-62/200YG24K4V-1
R900943631 3DREM10P-62/315YG24K4V-1
R900964518 3DREM10P-62/315YG24K4V
R900769060 3DREM16P-62/250XYG24K4V-2
R900948950 3DREM16P-62/200YG24K4V-1
R900949125 3DREM16P-62/200XYG24K4V-1
R900950403 3DREM16P-62/100YG24K4V-1
R900958861 3DREM16P-62/200YG24K4V
R900244331 3DRE10P-62/315YG24K4V
R900942975 3DRE10P-62/200YG24K4V-1
R900943090 3DRE10P-62/200XYG24K4V-1
R900950303 3DRE10P-62/100YG24K4V-1
R900705140 3DRE16P-62/200YG24K4V

3DRE(M)和3DRE(M)E型比例減壓閥三通；
通徑10和16，系列6X，最高工作壓力315bar，最大流量125 L/min（10通）/300 L/min（16通），重量7.7/10.2kg，7.8/10.3kg；
3DRE(M)和3DRE(M)E三通比例減壓閥：
先導式減壓閥用于P到A之減壓及A到T之溢流功能，是有比例電磁鐵來驅動的；
3DRE比例減壓閥：兩種最大壓力限制可選：無代碼或M帶限制壓力；電控裝置：無代碼外接電控或E帶內置放大器，案板安裝P，系列6X；
4種壓力等級：50,100,200,315bar；控制油供：Y內供外排，XY外供外排；電控器電壓G24；
電氣接線：3DRE，3DREM外接電控用作K4帶標準插座不插頭，3DREE，3DREME內置放大器用作K31帶標準插座不帶插頭；密封材料V；
用于底板安裝：安裝面按DIN 24340 A型，ISO 4401和CETOP-RP 121H；最大安全壓力-可選，控制閥芯彈簧對中；
3DRE(M)型電控器：歐洲卡規格模擬放大器VT-VSPA1（K）-1，歐洲卡規格數字放大器VT-VSPD-1，模快化電子放大器VT 11131；
設定值-壓力特定曲線呈線性；3DRE(M)E型集成電控器：制造誤差引起的設定值，-壓力特定曲線偏差比較小，壓力增加，減小的信號寫坡度可獨立調節；

電磁比例換向閥  4WRA(E)...2X...系列
R900244238 4WRA6WA30-22/G24N9K4/V
R900346622 4WRA6EA20-10/24NK4/M
R900380090 4WRA6W10-10/24NK4/M
R900381081 4WRA10EA40-10/24NK4/M
R900382854 4WRA6E20-10/24N9K4/M
R900555967 4WRAE10W1-30-22/G24N9K31/A1V
R900558355 4WRAE6E30-22/G24N9K31/A1V
R900558356 4WRAE10E60-22/G24N9K31/A1V
R900575765 4WRA10W1-60-22/G24N9K4/V
R900577424 4WRA10W30-22/G24K4/V
R900581366 4WRAP6W7-04-22/24K4/M
R900710082 4WRA6W10-10/24N9K4/M
R900710530 4WRAE10W60-22/G24K31/F1V
R900736894 4WRAE6W03-22/G24N9K31/A1V
R900750718 4WRAE6EA15-22/G24N9K31/A1V
R900762072 4WRAE6W30-22/G24K31/F1V
R900784024 4WRA6W1-15-22/G24N9K4/V-589
R900787374 4WRA6WA07-22/G24N9K4/V-589
R900900987 4WRAE6W30-22/G24N9K31/A1V
R900900988 4WRAE10W60-22/G24N9K31/A1V
R900902095 4WRA6W30-22/G24N9K4/V
R900902097 4WRA10E60-22/G24N9K4/V
R900902537 4WRA6W1-30-22/G24N9K4/V
R900902940 4WRA6E30-22/G24N9K4/V
R900904010 4WRAE10E30-22/G24N9K31/F1V
R900904105 4WRA6E07-22/G24N9K4/V-589
R900904438 4WRA6E15-22/G24K4/V
R900904439 4WRA6E30-22/G24K4/V
R900904801 4WRAE10WA60-22/G24N9K31/A1V
R900906034 4WRA6E1-15-22/G24N9K4/V
R900906262 4WRA6E07-22/G24N9K4/V
R900907650 4WRA10W60-22/G24N9K4/V
R900908195 4WRAE6W15-22/G24N9K31/F1V
R900908297 4WRA10E1-30-22/G24N9K4/V
R900908299 4WRA10W1-30-22/G24N9K4/V
R900908938 4WRAE6W15-22/G24N9K31/A1V
R900908978 4WRA10E1-60-22/G24N9K4/V
R900909389 4WRAE6E15-22/G24N9K31/A1V