傳真:021-52500777
地 址:上海市普陀區(qū)中江路889號曹楊商務(wù)大廈1501室
穆格(MOOG)D661-863A
穆格(MOOG)D661-863A
:陳
價注意事項:1.請?zhí)峁?列的物料編號和第二列具體型號
2.請發(fā)書面詢價函(郵件,,傳真等),不接受口頭報價。
3.如果型號不能*對上,請?zhí)峁┯⑽钠放泼?具體型號+數(shù)量。
4.詢價的商友請主動告知公司名稱和,謝謝。
MOD:D634-341C ,TYPE:R40KO2M0NSS2
MOD:D633-7213 ,TYPE:A02KA4F0VAY
MOOG徑向柱塞泵:D955-2017-10
MOD:G761-3034B ,TYPE:S63JOGB4VPL
MOD:D633-521B ,TYPE:R16K01FONSX2
MOD:D765-1089 ,TYPE:5S63JOGAGVSX0
MOOG雙聯(lián)泵 D951-2115/A HP-R18A1-RKP019SM28F2Y00DS1
MOD:D665-4769D ,TYPE:P15HAHW6SEM2-G
MOD:D664-4380K ,TYPE:P05HAMG6NEX2-E
MOD:D661-4439C ,TYPE:G15HOAA7VSX2HA
MOOG伺服閥:D661-5054
MOOG伺服閥:D661-5055
MOOG伺服閥:D663-4311K
MOOG伺服閥:D663-4312K
MOOG伺服閥:D662-4097
MOOG伺服閥:D662-4098
MOOG伺服閥:D665Z4760
MOOG伺服閥:D665Z4766D
MOOG伺服閥:D665Z4767B
D664-376KMOOG伺服閥:
D663-4313KMOOG伺服閥:
D663-4315KMOOG伺服閥:
D663-4316KMOOG伺服閥:
D662-4093MOOG伺服閥:
D662-4094MOOG伺服閥:
D664-4003MOOG伺服閥:
D664-4004MOOG伺服閥:
MOOG伺服閥:D662-4099
MOOG伺服閥:D662-4101
MOOG伺服閥:D661-5058
MOOG伺服閥:D664-372K
MOOG伺服閥:D665Z4755B
MOOG伺服閥:D665Z4758C
D664-4005MOOG伺服閥:
D664-4007MOOG伺服閥:
D661-5060MOOG伺服閥:
D661-5061MOOG伺服閥:
D661-5062MOOG伺服閥:
D661-4524C
G761-3005B
G761-3002B
D661-4526C
D661-4527C
D662K4134
D662K4796
D662K4798
D663-342K
D663-344K
D663-372D
D663-4002
D663-4003
D664-4305K
D664-4307K
D664-4308K
D665-4753
D665-4754
D665-4756
D633-308B
D633-312B
D633-313B
G761-3001B
G761-3003B
G761-3004B
D633-317B
D633-320B
D665-4761
D665-4764
D664-4309K
D664-4310K
D663-4004
D663-4005
D662K4803
D662K4804
D661-4533C
D661-4534C
D661-4535C
QXV21-010R
QXV22-005R
QXV24-005R
QXV26-008R
QXV26-005R
QXV31-032R
QXV33-012R
QXV21-012/21-012R
QXV21-016/21-010R
QXV32-010/22-005R
QXV42-020/32-012R
QXV42-032/32-016R
QXV52-040/22-005R
YUKEN DSG-03-3C4-R220-50
Rexroth R900546257 4WE6D73-6X/EG24N9K4/A12
MOOG G631-3006B H75JOFM4VBR
ATOS DHA-0630/2/PA-M
Rexroth R900703811 VT-DFP-A-2X/G24K0/0/V
Vickers 25V-21A-1B-22R
Rexroth R900918471 4WE10J73-3X/CG205N9K4/A12
BUCHER SWUVPB-INCO-AT-F-10-24VDC
YUKEN DSHG-03-3C12-A240-14
Rexroth 0811404611 4WRPEH6C4B12L-2X/G24K0/A1M
WANDFLUH AM22100b-G12
Rexroth R900965674 4WRAE10E60-2X/G24K31/F1V
ELEKTRA 1TZ90011CB634FA4-Z
Rexroth R910945253 A10VSO140DFR1/31R-VPB12N00
WANDFLUH AM22100b
D691-Q60DBAABNVSON--美國MOOG
D136-001-007(S/N:D0751)
DBDP06E4PAT8K 170BAR
RT7625M-3005 K63SM4V3D4PN
CA71189-001150A
D682 P02HAUF6VSX2-B
AWSTRALIA.PTY.LTD.G
D662Z4336KP01JXMF6VSX2-A
D633-7369
G771K200
D662-4651/G35JOAA6VSX2HA
B 97007-061(6 pole 6+PE)
配D633-328B的插頭
D633-525BR16K01FOVSX2
D633-Z371BR16KA1MONSX2
0061-202 閥
伺服閥插頭 B97069-061
D662-4336KP01JXMF6VSX2-A帶插頭
D672/D02JAKF6VSX2A
ZDBDP06A4008K/AT DA00
D664-4783 L05KDBM6SEM2-E
D633-317B
G631-3009B H20JDFM4VBR
D633-R04KO1A0NSM2
BN23-13GW-06LH
D633-472BR04K01FOVSX2
D661-4436C-G35HOAA6VSX2-HA
D662-DP02FYBM6NEM2-0
D661-571C
45122-013
D765-1089-4 Pp:350bar/
DBDP06E4PAT8K 350BAR
D633-455B R16K01MONSS2
D791-S16JOQOEUSB0
J072-056
J16H0BA4VN1
D662-4602K
D061-8312DJ5H0BB4HB1
80042-950
G761-3005-S63JOGM4VPL
J141-212B
Q60UBAF4VE92NBDK1C1 比例閥
PART NO.C00105-102
D661G35JOAA5VSX2HA
B97215-V631F63
DXJ5-D0L100/10N/E1K11
D631-389C
C13990 1米
D661-G08J0AA6NSX2HO 閥
D661-4206/P80HAAF5NSX2-A
D661-4651/G35JOAA6VSX2-A帶插頭
D792-4034S40J0QS6VSX2-B
WE42P10C21PA0NN P,A,B=35MPA
M-CEE25B6AR/KOB,DG15
M-35ED6UK1X/3500CG24N9K4/V
D691-078D-6-Q30FBAABNVS0N
J866-0002
D663-4301K-P03HXMW6NEC2
D662-4707 D02HYBW5NSX4-0
穆格(MOOG)P60JDGM4V.BR S/N:6963
穆格(MOOG)M-CEE63B6BU/KOB
穆格(MOOG)G7613001 HO4JOFM4VPL 伺服閥
穆格(MOOG)CZI-25-LS
穆格(MOOG)D661-2935E-P80HABF787SY26.
穆格(MOOG)D791-4007-S25J0QSVSX2-B+FIXING
穆格(MOOG)760N1190A
穆格(MOOG)P80HXAF5VSD2-A
穆格(MOOG)D691 E2052A
穆格(MOOG)G761-3605B, S63JOGM5UBL
穆格(MOOG)D792-E4013/S99JDQA6VSX2-B
穆格(MOOG)插頭 標準4芯配
穆格(MOOG)D661-4392E--流量40 l/min
穆格(MOOG)58249-942
穆格(MOOG)RVSAE3DS-212-05-01
穆格(MOOG)D662 P05HAMF6NSM2-O
穆格(MOOG)D682-4209-P01HYZF4VSX2A
穆格(MOOG)D635-640E
穆格(MOOG)T2/W2012
穆格(MOOG)二極管(3v1/3v2)DIODE MODULE
穆格(MOOG)D634-403C
穆格(MOOG)縮緊伺服閥 J664-307B
穆格(MOOG)D136-001-008
穆格(MOOG)D765-H38 JOGMEVSA0
穆格(MOOG)D634-314C
穆格(MOOG)M-CCE50D6406/P25;A00;B20
穆格(MOOG)D765-1603-4 S38JOGMEUSX0
穆格(MOOG)C70616-006
穆格(MOOG)D765-S38JOGMEVSXO
穆格(MOOG)E076-232 E120
穆格(MOOG)22042-22801
穆格(MOOG)HP-R18B1-FKP100TM28PF2Z00DS1
穆格(MOOG)J076-252
穆格(MOOG)D123-116a
穆格(MOOG)電磁閥 D631-175C
穆格(MOOG)G761-3007
穆格(MOOG)B634-314C
穆格(MOOG)MOd D957-2003 /B
穆格(MOOG)D661-4033P80HAAF6VSX2-A帶插頭
穆格(MOOG)SCE98.04.0
穆格(MOOG)D793-5034
穆格(MOOG)G761-3004B
穆格(MOOG)D661-4651/G35J0AA6RSX2HA
穆格(MOOG)L129-019-A012
穆格(MOOG)D691-072D-6-Q08FBAABNVS
穆格(MOOG)CZ1103Χ01A
穆格(MOOG)D633-E714A
穆格(MOOG)XDB10363-001-01
穆格(MOOG)A4602NG630-60攝氏度,L=40MM
穆格(MOOG)631-102C
穆格(MOOG)D760-401
穆格(MOOG)D663-4002
穆格(MOOG)J072-187
穆格(MOOG)D02HX AD6NSM2-O
穆格(MOOG)D791-4025-S16JOQA6VSX2-0
穆格(MOOG)M-CEE25B6BXL/KOB
穆格(MOOG)TRH-11-WC-4/F964A
穆格(MOOG)D661-4640G60KXAA5VSX2HA
穆格(MOOG)D662-4014C/D01JABF6VSX2-A
穆格(MOOG)B9700706IE17520I的B04部分
穆格(MOOG)D634-553AR40KO2M0VSX2
穆格(MOOG)P50FHGMAN6YOS PP 210bar
穆格(MOOG)G123-818
穆格(MOOG)H38JOGM4VPL MOD:G761-3004BSI
穆格(MOOG)D631-346C 伺服閥
穆格(MOOG)D661-G75H0A04NSD2HA
穆格(MOOG)B90886N-069F024
穆格(MOOG)D633D2505B-R04KD1MONSY2
穆格(MOOG)G772K240
穆格(MOOG)電源 E128-210
穆格(MOOG)D661-4023
穆格(MOOG)760A185A伺服閥
穆格(MOOG)D664Z4306KP05JXNF6VSX2-A(24V)
穆格(MOOG)072A560
穆格(MOOG)D633-R04K01MOVSS2
穆格(MOOG)M-CEE63B6BXU/KOB
穆格(MOOG)ITT-CA1200
穆格(MOOG)100點
穆格(MOOG)H30K0GMJNSF2
穆格(MOOG)D765-1601-4,S10JOGMEUSX0
穆格(MOOG)D792-4004S80J0QV6VSX2-B
穆格(MOOG)D633R04KA0M0NSM2
穆格(MOOG)D661-4055-P80HABF7VX2-A
穆格(MOOG)G15H0AANSX2HA
穆格(MOOG)D952-2109/B
穆格(MOOG)D661-4551G35JOAA6VSX2HA 帶插頭
穆格(MOOG)AEC 06F14S-61S 211,ENI PMCG
穆格(MOOG)G761-3304
穆格(MOOG)D661-4651 CG35JOXA6VSX2HA
穆格(MOOG)HP-R18A1-RKP019SM28F2Y00DS1
穆格(MOOG)伺服閥 MOD-J761-003
穆格(MOOG)D661-P60KAAM6NEM2C
穆格(MOOG)D633-237 R08KA1MON6M2
穆格(MOOG)D941-6737C-0001
穆格(MOOG)CA120001-97
穆格(MOOG)伺服閥 D661-5640C
穆格(MOOG)G761-3025
穆格(MOOG)D661-4380E
穆格(MOOG)D664-4372KP05HXMW6NEC2-D
穆格(MOOG)H2/W28-12/W27
穆格(MOOG)WE4SP06F08PC0BN
穆格(MOOG)D661-4651/G35JOAA6VSX2HA
穆格(MOOG)G761-3002H10J0FM4VPL
穆格(MOOG)D662-4015
穆格(MOOG)D952-2075/B
穆格(MOOG)伺服閥D661-4309CG45KXAA4NSX2HA
穆格(MOOG)72S09KOFM5VBL
穆格(MOOG)O型圈
穆格(MOOG)G706-001
穆格(MOOG)M-CCE40DMX06/P25;A25;B00
德國亨士樂|Hengstler編碼器
1、增量式編碼器型號有:
RI30-O/RI32-O/RI36-O/RI38-O/RI41-O/RI42-O/RI58-O/RI59-O/RIS58-O/RX70-I/RI36-H/RI58-H/RI58-D/RI76TD/RIS58-H。
0520026~Encoder RI30-O/ 100AR.34TB
0520027~Encoder RI30-O/ 25ER.34KB
0520028~Encoder RI30-O/ 50ER.34KB
0520029~Encoder RI30-O/ 100ER.34KB
0520030~Encoder RI30-O/ 360ER.34KB
0520031~Encoder RI30-O/ 1000ER.34KB
¨Hengstler Encoder RI30¨
0520032~Encoder RI30-O/ 60AR.34RB
0520137~Encoder RI30-O/ 360ES.34KB
0520138~Encoder RI30-O/ 360ER.34KA
0520139~Encoder RI30-O/ 1250AR.34RB
0520141~Encoder RI30-O/ 1500AR.34KA
0520142~Encoder RI30-O/ 1500ER.34KB
0520144~Encoder RI30-O/ 720ER.34KA
¨Hengstler Encoder RI30¨
0520145~Encoder RI30-O/ 100ER.34KN
0520146~Encoder RI30-O/ 360ES.34KN
0520147~Encoder RI30-O/ 100ES.34KB-P0
0520148~Encoder RI30-O/ 1500ER.34KB-E0
0520149~Encoder RI30-O/ 500AR.34KA-F0
0520150~Encoder RI30-O/ 400AR.34KN
0520151~Encoder RI30-O/ 400AR.34KB
0520152~Encoder RI30-O/ 720AR.34TB
0520153~Encoder RI30-O/ 720AR.34TA
0520154~Encoder RI30-O/ 60ER.34KB
0520155~Encoder RI30-O/ 10ES.34KN
0520156~Encoder RI30-O/ 1000AR.34KN
¨Hengstler Encoder RI30¨
0520174~Encoder RI30-O/ 1024AR.34KN
0520175~Encoder RI30-O/ 100ER.34KB-F0
0520176~Encoder RI30-O/ 20AR.34TB
¨Hengstler Encoder RI 30¨
0520197~Encoder RI30-O/ 20ER.34KA
0520198~Encoder RI30-O/ 200AR.34RB
D691-Q60DBAABNVSON--美國MOOG
D136-001-007(S/N:D0751)
DBDP06E4PAT8K 170BAR
RT7625M-3005 K63SM4V3D4PN
CA71189-001150A
D682 P02HAUF6VSX2-B
AWSTRALIA.PTY.LTD.G
D662Z4336KP01JXMF6VSX2-A
D633-7369
G771K200
D662-4651/G35JOAA6VSX2HA
B 97007-061(6 pole 6+PE)
配D633-328B的插頭
D633-525BR16K01FOVSX2
D633-Z371BR16KA1MONSX2
0061-202 閥
伺服閥插頭 B97069-061
D662-4336KP01JXMF6VSX2-A帶插頭
D672/D02JAKF6VSX2A
ZDBDP06A4008K/AT DA00
D664-4783 L05KDBM6SEM2-E
D633-317B
G631-3009B H20JDFM4VBR
D633-R04KO1A0NSM2
BN23-13GW-06LH
D633-472BR04K01FOVSX2
D661-4436C-G35HOAA6VSX2-HA
D662-DP02FYBM6NEM2-0
D661-571C
45122-013
D765-1089-4 Pp:350bar/
DBDP06E4PAT8K 350BAR
D633-455B R16K01MONSS2
D791-S16JOQOEUSB0
J072-056
J16H0BA4VN1
D662-4602K
D061-8312DJ5H0BB4HB1
80042-950
G761-3005-S63JOGM4VPL
J141-212B
Q60UBAF4VE92NBDK1C1 比例閥
PART NO.C00105-102
D661G35JOAA5VSX2HA
B97215-V631F63
DXJ5-D0L100/10N/E1K11
D631-389C
C13990 1米
D661-G08J0AA6NSX2HO 閥
D661-4206/P80HAAF5NSX2-A
D661-4651/G35JOAA6VSX2-A帶插頭
D792-4034S40J0QS6VSX2-B
WE42P10C21PA0NN P,A,B=35MPA
M-CEE25B6AR/KOB,DG15
M-35ED6UK1X/3500CG24N9K4/V
D691-078D-6-Q30FBAABNVS0N
J866-0002
D663-4301K-P03HXMW6NEC2
D662-4707 D02HYBW5NSX4-0
穆格(MOOG)P60JDGM4V.BR S/N:6963
穆格(MOOG)M-CEE63B6BU/KOB
穆格(MOOG)G7613001 HO4JOFM4VPL 伺服閥
穆格(MOOG)CZI-25-LS
穆格(MOOG)D661-2935E-P80HABF787SY26.
穆格(MOOG)D791-4007-S25J0QSVSX2-B+FIXING
穆格(MOOG)760N1190A
穆格(MOOG)P80HXAF5VSD2-A
穆格(MOOG)D691 E2052A
穆格(MOOG)G761-3605B, S63JOGM5UBL
穆格(MOOG)D792-E4013/S99JDQA6VSX2-B
穆格(MOOG)插頭 標準4芯配
穆格(MOOG)D661-4392E--流量40 l/min
穆格(MOOG)58249-942
穆格(MOOG)RVSAE3DS-212-05-01
穆格(MOOG)D662 P05HAMF6NSM2-O
穆格(MOOG)D682-4209-P01HYZF4VSX2A
穆格(MOOG)D635-640E
穆格(MOOG)T2/W2012
穆格(MOOG)二極管(3v1/3v2)DIODE MODULE
穆格(MOOG)D634-403C
穆格(MOOG)縮緊伺服閥 J664-307B
穆格(MOOG)D136-001-008
穆格(MOOG)D765-H38 JOGMEVSA0
穆格(MOOG)D634-314C
穆格(MOOG)M-CCE50D6406/P25;A00;B20
穆格(MOOG)D765-1603-4 S38JOGMEUSX0
穆格(MOOG)C70616-006
穆格(MOOG)D765-S38JOGMEVSXO
穆格(MOOG)E076-232 E120
穆格(MOOG)22042-22801
穆格(MOOG)HP-R18B1-FKP100TM28PF2Z00DS1
穆格(MOOG)J076-252
穆格(MOOG)D123-116a
穆格(MOOG)電磁閥 D631-175C
穆格(MOOG)G761-3007
穆格(MOOG)B634-314C
穆格(MOOG)MOd D957-2003 /B
穆格(MOOG)D661-4033P80HAAF6VSX2-A帶插頭
穆格(MOOG)SCE98.04.0
穆格(MOOG)D793-5034
穆格(MOOG)G761-3004B
穆格(MOOG)D661-4651/G35J0AA6RSX2HA
穆格(MOOG)L129-019-A012
穆格(MOOG)D691-072D-6-Q08FBAABNVS
穆格(MOOG)CZ1103Χ01A
穆格(MOOG)D633-E714A
穆格(MOOG)XDB10363-001-01
穆格(MOOG)A4602NG630-60攝氏度,L=40MM
穆格(MOOG)631-102C
穆格(MOOG)D760-401
穆格(MOOG)D663-4002
穆格(MOOG)J072-187
穆格(MOOG)D02HX AD6NSM2-O
穆格(MOOG)D791-4025-S16JOQA6VSX2-0
穆格(MOOG)M-CEE25B6BXL/KOB
穆格(MOOG)TRH-11-WC-4/F964A
穆格(MOOG)D661-4640G60KXAA5VSX2HA
穆格(MOOG)D662-4014C/D01JABF6VSX2-A
穆格(MOOG)B9700706IE17520I的B04部分
穆格(MOOG)D634-553AR40KO2M0VSX2
穆格(MOOG)P50FHGMAN6YOS PP 210bar
穆格(MOOG)G123-818
穆格(MOOG)H38JOGM4VPL MOD:G761-3004BSI
穆格(MOOG)D631-346C 伺服閥
穆格(MOOG)D661-G75H0A04NSD2HA
穆格(MOOG)B90886N-069F024
穆格(MOOG)D633D2505B-R04KD1MONSY2
穆格(MOOG)G772K240
穆格(MOOG)電源 E128-210
穆格(MOOG)D661-4023
穆格(MOOG)760A185A伺服閥
穆格(MOOG)D664Z4306KP05JXNF6VSX2-A(24V)
穆格(MOOG)072A560
穆格(MOOG)D633-R04K01MOVSS2
穆格(MOOG)M-CEE63B6BXU/KOB
穆格(MOOG)ITT-CA1200
穆格(MOOG)100點
穆格(MOOG)H30K0GMJNSF2
穆格(MOOG)D765-1601-4,S10JOGMEUSX0
穆格(MOOG)D792-4004S80J0QV6VSX2-B
穆格(MOOG)D633R04KA0M0NSM2
穆格(MOOG)D661-4055-P80HABF7VX2-A
穆格(MOOG)G15H0AANSX2HA
穆格(MOOG)D952-2109/B
穆格(MOOG)D661-4551G35JOAA6VSX2HA 帶插頭
穆格(MOOG)AEC 06F14S-61S 211,ENI PMCG
穆格(MOOG)G761-3304
穆格(MOOG)D661-4651 CG35JOXA6VSX2HA
穆格(MOOG)HP-R18A1-RKP019SM28F2Y00DS1
穆格(MOOG)伺服閥 MOD-J761-003
穆格(MOOG)D661-P60KAAM6NEM2C
穆格(MOOG)D633-237 R08KA1MON6M2
穆格(MOOG)D941-6737C-0001
穆格(MOOG)CA120001-97
穆格(MOOG)伺服閥 D661-5640C
穆格(MOOG)G761-3025
穆格(MOOG)D661-4380E
穆格(MOOG)D664-4372KP05HXMW6NEC2-D
穆格(MOOG)H2/W28-12/W27
穆格(MOOG)WE4SP06F08PC0BN
穆格(MOOG)D661-4651/G35JOAA6VSX2HA
穆格(MOOG)G761-3002H10J0FM4VPL
穆格(MOOG)D662-4015
穆格(MOOG)D952-2075/B
穆格(MOOG)伺服閥D661-4309CG45KXAA4NSX2HA
穆格(MOOG)72S09KOFM5VBL
穆格(MOOG)O型圈
穆格(MOOG)G706-001
穆格(MOOG)M-CCE40DMX06/P25;A25;B00
德國亨士樂|Hengstler編碼器
1、增量式編碼器型號有:
RI30-O/RI32-O/RI36-O/RI38-O/RI41-O/RI42-O/RI58-O/RI59-O/RIS58-O/RX70-I/RI36-H/RI58-H/RI58-D/RI76TD/RIS58-H。
0520026~Encoder RI30-O/ 100AR.34TB
0520027~Encoder RI30-O/ 25ER.34KB
0520028~Encoder RI30-O/ 50ER.34KB
0520029~Encoder RI30-O/ 100ER.34KB
0520030~Encoder RI30-O/ 360ER.34KB
0520031~Encoder RI30-O/ 1000ER.34KB
¨Hengstler Encoder RI30¨
0520032~Encoder RI30-O/ 60AR.34RB
0520137~Encoder RI30-O/ 360ES.34KB
0520138~Encoder RI30-O/ 360ER.34KA
0520139~Encoder RI30-O/ 1250AR.34RB
0520141~Encoder RI30-O/ 1500AR.34KA
0520142~Encoder RI30-O/ 1500ER.34KB
0520144~Encoder RI30-O/ 720ER.34KA
¨Hengstler Encoder RI30¨
0520145~Encoder RI30-O/ 100ER.34KN
0520146~Encoder RI30-O/ 360ES.34KN
0520147~Encoder RI30-O/ 100ES.34KB-P0
0520148~Encoder RI30-O/ 1500ER.34KB-E0
0520149~Encoder RI30-O/ 500AR.34KA-F0
0520150~Encoder RI30-O/ 400AR.34KN
0520151~Encoder RI30-O/ 400AR.34KB
0520152~Encoder RI30-O/ 720AR.34TB
0520153~Encoder RI30-O/ 720AR.34TA
0520154~Encoder RI30-O/ 60ER.34KB
0520155~Encoder RI30-O/ 10ES.34KN
0520156~Encoder RI30-O/ 1000AR.34KN
¨Hengstler Encoder RI30¨
0520174~Encoder RI30-O/ 1024AR.34KN
0520175~Encoder RI30-O/ 100ER.34KB-F0
0520176~Encoder RI30-O/ 20AR.34TB
¨Hengstler Encoder RI 30¨
0520197~Encoder RI30-O/ 20ER.34KA
0520198~Encoder RI30-O/ 200AR.34RB