华为CloudEngine S12704交换机
1. Huawei CloudEngine S12704 Switch – Scalable Modular Core Switch for Enterprise Networks
2. 产品概述
The Huawei CloudEngine S12704 Switch is a high-performance, modular Layer 3 switch designed for enterprise core and data center aggregation networks. As part of the Huawei CloudEngine S12700 series, it offers scalable switching capacity, carrier-grade reliability, and advanced security features. With support for IPv6, non-blocking architecture, and intelligent QoS management, the S12704 delivers robust performance for medium-to-large-scale deployments in campus backbone, cloud computing, and service provider environments.
3. 产品规格概述
这 CloudEngine S12704 serves as an entry-level chassis within the S12700 series, offering up to 38.4 Tbps switching capacity — ideal for mid-sized enterprise cores and cost-effective data center aggregation deployments requiring high-density 10/40G connectivity.
4.Huawei S12704 Switch Product Specifications
规格 | S12704 | S12708 | S12710 | S12712 |
交换容量 | 4.88/16.08 Tbit/s | 12.32/44.96 Tbit/s | 13.12/38.56 Tbit/s | 17.44/44.96 Tbit/s |
Packet Forwarding Rate | 3,120/4,560 Mpps | 6,240/30,240 Mpps | 7,440/11,040 Mpps | 9,120/30,240 Mpps |
MPU插槽 | 2 | 2 | 2 | 2 |
SFU插槽 | 2 | 4 | 4 (integrated and independent) | 4 |
Service Card Slots | 4 | 8 | 10 | 12 |
CSS2 | 1+N MPU backup in a cluster | |||
高达1.92Tbit/s集群带宽,4μs框间传输时延 | ||||
无线网络管理 | 原生交流电 | |||
AP 访问控制、AP 区域管理和 AP 配置文件管理 | ||||
Radio profile management, unified static configuration, and centralized dynamic management | ||||
基本 WLAN 服务、QoS、安全和用户管理 | ||||
用户管理 | 统一用户管理 | |||
802.1x, MAC, and Portal authentication | ||||
Charging based on traffic volume and online duration | ||||
基于用户组、域和时间范围的用户授权 | ||||
主成分分析 | 在业务数据包上添加标记,以便在零有效载荷的情况下实时测量丢失的数据包数量和数据包丢失率 | |||
测量第 2 层和第 3 层网络上网络和设备级别的丢包数量和丢包率 | ||||
SVF2.0 | Up to 4K clients (access switches and APs) virtualized into a single device | |||
2级AS结构 | ||||
华为和非华为设备统一管理 | ||||
Interoperability | VLAN-based Spanning Tree (VBST) (interoperating with PVST, PVST+, and RPVST) | |||
Link-type Negotiation Protocol (LNP) (similar to DTP) | ||||
VLAN Central Management Protocol (VCMP) (similar to VTP) |
5. 产品特点
- 非阻塞架构: Ensures full line-rate forwarding without internal bottlenecks or congestion.
- 高可靠性:支持 NSR(不间断路由)、ISSU(在线软件升级)和双 MPU,实现 99.999% 正常运行时间。
- 高级 QoS 和流量管理: Enables granular service differentiation and SLA assurance across enterprise applications.
- IPv6 就绪且面向未来:原生 IPv6 支持确保平稳迁移和长期可扩展性。
- 模块化设计: Flexible configuration options allow tailored deployment for diverse network scenarios and future expansion needs.
6. 产品应用场景
这 华为CloudEngine S12704交换机 is widely used in enterprise campus backbone networks, medium-scale data centers, and metro aggregation nodes. It supports high-density Layer 2/Layer 3 forwarding, making it suitable for handling virtualized services, cloud connectivity, and mobile backhaul traffic in cost-sensitive yet performance-demanding environments.
该交换机与其他成员一起无缝集成到分层网络架构中 华为CloudEngine S12700系列, enabling organizations to build resilient, secure, and future-ready infrastructures. Whether deployed in government agencies, education institutions, or regional enterprise branches, the S12704 provides stable and intelligent network services that align with evolving digital transformation goals.
7.Huawei S12704 Switch Product Ordering Info
LE2BN66ED000 | N66E直流总装机柜(8路60A输出,每路最大2200W,600×600×2200mm) |
LE2BN66EA000 | N66E交流总装机柜(4路16A输出,每路最大2500W,600×600×2200mm) |
ET1BS12704S0 | S12704总成底盘 |
ET1BS12708S0 | S12708组装底盘 |
ET1BS12710S0 | S12710组装底盘 |
ET1BS12712S0 | S12712组装底盘 |
ET1MFBX00000 | 宽压129风扇盒 |
EH1M00FBX000 | 宽压74风扇盒 |
监控单元 | |
EH1D200CMU00 | 集中监控单元 |
主处理单元 | |
ET1D2MPUA000 | S12700主控单元A、可选时钟 |
ET1D2MPUBC00 | S12710主控单元B,可选时钟 |
ET1D2MPUBC01 | S12710,主处理单元B(支持安全启动) |
ET1D2MPUDC00 | S12704/S12708/S12712,主处理单元D |
交换矩阵单元 | |
ET1D2SFUA000 | S12700交换网单元A |
ET1D2SFUB000 | S12700交换网单元B |
ET1D2SFUC000 | S12700交换网单元C |
ET1D2SFUD000 | S12700交换网单元D |
100M/1000M以太网电接口卡 | |
ET1D2G48TEA0 | 48端口10/100/1000BASE-T以太网电接口板(EA,RJ45) |
ET1D2G48TEC0 | 48端口10/100/1000BASE-T以太网电接口板(EC,RJ45) |
ET1D2G48TX1E | 48端口10/100/1000BASE-T以太网电接口板(X1E,RJ45) |
ET1D2G48TX5S | 48端口百兆/千兆以太网电接口板(X5S,RJ45) |
ET1D2G48TX5E | 48端口百兆/千兆以太网电接口板(X5E,RJ45) |
ET1D2G48TX5H | 48端口百兆/千兆以太网电接口板(X5H,RJ45) |
100M/1000M以太网光接口卡 | |
ET1D2G24SEC0 | 24端口百兆/千兆以太网电接口板(EC,SFP) |
ET1D2G24SX5E | 24端口百兆/千兆以太网电接口板(X5E,SFP) |
ET1D2G48SEA0 | 48端口百兆/千兆以太网电接口板(EA,SFP) |
ET1D2G48SEC0 | 48端口百兆/千兆以太网电接口板(EC,SFP) |
ET1D2G48SX1E | 48端口百兆/千兆以太网电接口板(X1E,SFP) |
ET1D2G48SX5S | 48端口百兆/千兆以太网电接口板(X5S,SFP) |
ET1D2G48SX5E | 48端口百兆/千兆以太网电接口板(X5E,SFP) |
ET1D2G48SX5H | 48端口百兆/千兆以太网电接口板(X5H,SFP) |
100M/1000M以太网电接口卡和光接口卡 | |
ET1D2T36SEA0 | 36端口10/100/1000 BASE-T和12端口100/1000 BASE-X接口卡(EA,RJ45/SFP) |
10GE光接口卡 | |
ET1D2S04SX1E | 4端口10G BASE-X和24端口100/1000 BASE-X和8端口10/100/1000 BASE-T Combo接口卡(X1E,RJ45/SFP/SFP+) |
ET1D2S04SX5E | 4端口10GE SFP+和44端口GE SFP接口卡(X5E,SFP+) |
ET1D2S08SX1E | 8端口万兆以太网电口和8端口百兆/千兆以太网电口和8端口十兆/十兆/千兆combo接口卡(X1E,RJ45/SFP/SFP+) |
ET1D2X08SX5E | 8端口10GE SFP+接口卡(X5E,SFP+) |
ET1D2X08SX5H | 8端口10GE SFP+接口卡(X5H,SFP+) |
ET1D2X16SSC2 | 16端口10GBASE-X电接口板(SC,SFP+) |
ET1D2X32SSC0 | 32端口10GBASE-X电接口板(SC,SFP+) |
ET1D2X48SEC0 | 48端口10G BASE-X电接口板(EC,SFP+) |
ET1D2X32SX2H | 32端口10GE SFP+电接口板(X2H,SFP+) |
ET1D2X32SX2S | 32端口10GE SFP+电接口板(X2S,SFP+) |
ET1D2X32SX2E | 32端口10GE SFP+电接口板(X2E,SFP+) |
ET1D2S24SX2S | 24端口10GE SFP+接口和8端口GE SFP接口卡(X2S,SFP+) |
ET1D2S24SX2E | 24端口10GE SFP+接口和8端口GE SFP接口卡(X2E,SFP+) |
ET1D2S16SX2S | 16端口10GE SFP+接口和16端口GE SFP接口卡(X2S,SFP+) |
ET1D2S16SX2E | 16端口10GE SFP+接口和16端口GE SFP接口卡(X2E,SFP+) |
ET1D2X48SX2S | 48端口10GE SFP+电接口板(X2S,SFP+) |
40GE光接口卡 | |
ET1D2L02QSC0 | 2端口40G BASE-X接口板(SC,QSFP+) |
ET1D2L08QSC0 | 8端口40G BASE-X接口板(SC,QSFP+) |
EH1D2L08QX2E | 8端口40GE QSFP+接口卡(X2E,QSFP+) |
ET1D2L16QX2H | 16端口40GE QSFP+接口板(X2H,QSFP+) |
100GE光接口卡 | |
ET1D2C02FEE0 | 2端口100G BASE-X接口卡(EE,CFP) |
ET1D2C04HX2H | 4端口100GE QSFP28接口卡(X2H,QSFP28) |
ET1D2C04HX2S | 4端口100GE QSFP28接口卡(X2S,QSFP28) |
ET1D2C04HX2E | 4端口100GE QSFP28接口卡(X2E,QSFP28) |
ET1D2C08HX2H | 8端口100GE QSFP28接口卡(X2H,QSFP28) |
ET1D2H02QX2S | 2端口100GE QSFP28接口和2端口40GE QSFP+接口卡(X2S,QSFP28) |
ET1D2H02QX2E | 2端口100GE QSFP28接口和2端口40GE QSFP+接口卡(X2E,QSFP28) |
业务子卡 | |
EH1D2VS08000 | 8端口10G集群交换系统服务单元(SFP+) |
ET1D2VQ06000 | 6端口40 GE集群交换系统服务单元(QSFP+) |
LE0D00CKMA00 | 时钟扣板-1588 |
服务处理卡 | |
ET1D2FW00S00 | NGFW Module A,含HW通用安全平台软件 |
ET1D2FW00S01 | NGFW Module B,含HW通用安全平台软件 |
ET1D2FW00S02 | NGFW Module C,含HW通用安全平台软件 |
ET1D2IPS0S00 | IPS模块A,含HW通用安全平台软件 |
ACU2 | WLAN ACU2接入控制器单元(含128个AP控制资源) |
光收发器 | |
FE-SFP光收发器 | |
SFP-FE-SX-MM1310 | 光收发器-SFP-100M/155M-多模模块(1310nm,2km,LC) |
eSFP-FE-LX-SM1310 | 光收发器-eSFP-100M/155M-单模模块(1310nm,15km,LC) |
S-SFP-FE-LH40-SM1310 | 光收发器,eSFP,FE,单模模块(1310nm,40km,LC) |
S-SFP-FE-LH80-SM1550 | 光收发器,eSFP,FE,单模模块(1550nm,80km,LC) |
GE-SFP光模块 | |
SFP-1000BaseT | 铜收发器-SFP-GE-电接口模块(100m,RJ45) |
eSFP-GE-SX-MM850 | 光收发器-eSFP-GE-多模模块(850nm,0.5km,LC) |
SFP-GE-LX-SM1310 | 光收发一体模块-SFP-GE-单模模块(1310nm,10km,LC) |
S-SFP-GE-LH40-SM1310 | 光收发器-eSFP-GE-单模模块(1310nm,40km,LC) |
S-SFP-GE-LH40-SM1550 | 光收发器-eSFP-GE-单模模块(1550nm,40km,LC) |
S-SFP-GE-LH80-SM1550 | 光收发器-eSFP-GE-单模模块(1550nm,80km,LC) |
eSFP-GE-ZX100-SM1550 | 光收发器-eSFP-GE-单模模块(1550nm,100km,LC) |
10GE-XFP光收发器 | |
XFP-SX-MM850 | 光收发器-XFP-10G-多模模块(850nm,0.3km,LC) |
XFP-STM64-LX-SM1310 | 光收发器-XFP-10G-单模模块(1310nm,10km,LC) |
XFP-STM64-LH40-SM1550 | 光收发器-XFP-10G-单模模块(1550nm,40km,LC) |
XFP-STM64-SM1550-80公里 | 光收发器-XFP-10G-单模模块(1550nm,80km,LC) |
10GE-SFP+光收发器 | |
OMXD30000 | 光收发一体模块-SFP+-10G-多模模块(850nm,0.3km,LC) |
OSX010000 | 光收发器-SFP+-10G-单模模块(1310nm,10km,LC) |
OSX040N01 | 光收发器-SFP+-10G-单模模块(1550nm,40km,LC) |
OSXD22N00 | 光收发器-SFP+-10G-单模模块(1310nm,0.22km,LC,LRM) |
SFP-10G-USR | 光收发一体模块-SFP+-10G-多模模块(850nm,0.1km,LC) |
SFP-10G-ZR | 光收发器-SFP+-10G-单模模块(1550nm,80km,LC) |
SFP-10G-ZCW1571 | 光收发器-SFP+-10G-单模模块(CWDM,1571nm,70km,LC) |
SFP-10G-ZCW1591 | 光收发器-SFP+-10G-单模模块(CWDM,1591nm,70km,LC) |
SFP-10G-ZCW1611 | 光收发器-SFP+-10G-单模模块(CWDM,1611nm,70km,LC) |
SFP-10G-iLR | 光收发一体模块-SFP+-10G-单模模块(DWDM,1560.61~1529.16nm,60km,LC) |
SFP-10G-ZDWT-L | 光收发器-SFP+-9.8G-单模模块(1310nm,1.4km,LC) |
40GE光模块 | |
QSFP-40G-iSR4 | 40G Base-iSR4 光模块-QSFP-40G-多模模块(850nm,0.15km,MPO)(对接4个SFP+光模块) |
QSFP-40G-LX4 | 40G Base-LX4 光收发器,QSFP+,40 GE,单模(1,310 nm,2 km,LC),多模(1,310 nm,0.15 km,LC) |
QSFP-40G-iSM4 | 40G Base-iSM4 光收发器-QSFP+-40G-单模模块(1310nm,1.4km,MPO) (连接4个SFP+光收发器) |
QSFP-40G-eSM4 | 40G Base-eSM4 光收发器-QSFP+-40G-单模模块(-1310nm,10km,MPO) (连接4个SFP+光收发器) |
QSFP-40G-LR4 | 40G Base-LR4光收发一体模块-QSFP+-40G-单模模块(1310nm,10km,LC) |
QSFP-40G-eSR4 | 40G Base-eSR4 光模块-QSFP+-40G-多模模块(850nm,0.3km,MPO)(对接4个SFP+光模块) |
CFP-40G-SR4 | 高速收发器,CFP,40G,多模模块(850 nm,4 x 10G,0.1 km,MPO) |
CFP-40G-LR4 | 高速收发器,CFP,40G,单模模块(1,310 nm 波段,41.25G,10 km,直 LC) |
CFP-40G-ER4 | 高速收发器,CFP,40G,单模模块(1,310 nm 波段,41.25G,40 km,直 LC) |
CFP-40G-ZR4 | 高速收发器,CFP,40G,单模模块(1,550 nm 波段,41.25G,80 km,直 LC) |
QSFP-40G-ER4 | 40G Base-ER4 光收发器,QSFP+,40G,单模模块(1,310 nm,40 km,LC) |
100GE光收发器 | |
CFP-100G-SR10 | 高速收发器,CFP,100G,多模模块(850 nm,10 x 10G,0.1 km,MPO)(可连接到 10 个 SFP+ 端口或 2 个 QSFP+ 端口) |
CFP-100G-LR4 | 高速收发器,CFP,100G,单模模块(1,310 nm 波段,4 x 25G,10 km,直通 LC) |
CFP-100G-ER4 | 高速收发器,CFP,100G,单模模块(1,310 nm 波段,4 x 25G,40 km,直 LC) |
CFP-100GE-ZR4 | 100G Base,CFP 模块,100G,单模模块(1,310 nm 波段,4 x 25G,80 km,直连 LC) |
QSFP-100G-CLR4 | 高速收发器,QSFP28,1,310 nm,4 x 25G 基座,-6.5 dBm,2.5 dBm,-10.7 dBm,LC/PC,2 公里 |
QSFP-100G-CWDM4 | 高速收发器,QSFP28,1,310 nm,4 x 25G 底座,-6.5 dBm,2.5 dBm,-9.8 dBm,LC/PC,2 公里 |
QSFP-100G-ER4-Lite | 100G Base-ER4-Lite 光收发器,QSFP28,100G,单模模块(1,310 nm,30 km(FEC OFF),40 km(FEC ON),LC) |
QSFP-100G-LR4 | 100G Base-LR4 光收发器,QSFP28,100G,单模模块(1,310 nm,10 km,LC) |
QSFP-100G-SR4 | 100G Base-SR4 光收发器,QSFP28,100G,多模(850 nm,0.1 km,MPO) |
QSFP-100G-PSM4 | 100G Base-PSM4 光收发器,QSFP28,100G,单模模块(1,310 nm,0.5 km,MPO) |
BIDI-SFP光模块 | |
SFP-FE-LX-SM1310-BIDI | 光模块-eSFP-FE-BIDI单模模块(TX1310/RX1550,15km,LC) |
SFP-FE-LX-SM1550-BIDI | 光模块-eSFP-FE-BIDI单模模块(TX1550/RX1310,15km,LC) |
SFP-GE-LX-SM1310-BIDI | 光模块-eSFP-GE-BIDI单模模块(TX1310/RX1490,10km,LC) |
SFP-GE-LX-SM1490-BIDI | 光收发一体模块-eSFP-GE-BIDI单模模块(TX1490/RX1310,10km,LC) |
LE2MGSC40ED0 | 光模块-SFP-GE-BIDI单模模块(TX1490/RX1310-40km,LC) |
LE2MGSC40DE0 | 光模块-SFP-GE-BIDI单模模块(TX1310/RX1490-40km,LC) |
SFP-GE-ZBXD1 | 光收发器-eSFP-GE-BIDI单模模块(TX1570/RX1490-80km-LC) |
SFP-GE-ZBXU1 | 光收发器-eSFP-GE-BIDI单模模块(TX1490/RX1570-80km-LC) |
BIDI-SFP+光模块 | |
SFP-10G-ER-SM1330-BIDI | 光模块-SFP+-10G-BIDI单模模块(TX1330/RX1270-40km-LC) |
SFP-10G-ER-SM1270-BIDI | 光模块-SFP+-10G-BIDI单模模块(TX1270/RX1330-40km-LC) |
SFP-10G-BXU1 | 10G Base,双向(BIDI)光收发器,SFP,10G,单模模块(TX1270/RX1330,10公里,LC) |
SFP-10G-BXD1 | 10G Base-BIDI光模块-SFP-10G-单模模块(TX1330/RX1270,10km,LC) |
高速电缆 | |
SFP-10G-CU1M | SFP+-10G-高速电缆-1m-(SFP+20M)-(CC2P0.254黑(S))-(SFP+20M)-室内使用 |
SFP-10G-CU3M | SFP+-10G-高速电缆-3m-(SFP+20M)-(CC2P0.254黑(S))-(SFP+20M)-室内使用 |
SFP-10G-CU5M | SFP-10G-高速电缆-5m-SFP+20M-CC2P0.254黑(S)-SFP+20M-室内用LSFRZH |
SFP-10G-AC10M | SFP+-10G-有源高速电缆-10m-(SFP+20M)-(CC2P0.32黑(S))-(SFP+20M)-室内使用 |
QSFP-4SFP10G-CU1M | QSFP+-4SFP+10G-高速电缆-1m-(QSFP+38米)-(CC8P0.254黑(S))-(4xSFP+20米)-室内使用 |
QSFP-4SFP10G-CU3M | QSFP+-4SFP+10G-高速电缆-3m-(QSFP+38米)-(CC8P0.32黑(S))-(4xSFP+20米)-室内使用 |
QSFP-4SFP10G-CU5M | QSFP+-4SFP+10G-高速电缆-5m-(QSFP+38米)-(CC8P0.4黑(S))-(4xSFP+20米)-室内使用 |
QSFP-40G-CU1M | QSFP+-40G-高速电缆-1m-(QSFP+38公)-(CC8P0.254黑(S))-(QSFP+38公)-室内使用 |
QSFP-40G-CU3M | QSFP+-40G-高速电缆-3m-(QSFP+38公)-(CC8P0.32黑(S))-(QSFP+38公)-室内使用 |
QSFP-40G-CU5M | QSFP+-40G-高速电缆-5m-(QSFP+38公)-(CC8P0.40黑(S))-(QSFP+38公)-室内使用 |
QSFP-100G-CU1M | 高速电缆-100G QSFP28无源高速电缆-1m-(QSFP28)-(CC8P0.254黑(S))-(QSFP28)-ETH 100GbE |
QSFP-100G-CU3M | 高速电缆-100G QSFP28无源高速电缆-3m-(QSFP28)-(CC8P0.254黑(S))-(QSFP28)-ETH 100GbE |
QSFP-100G-CU5M | 高速电缆-100G QSFP28无源高速电缆-5米-(QSFP28)-(CC8P0.4黑(S))-(QSFP28)-ETH 100GbE |
光纤 | |
SFP-10G-AOC3M | AOC 光纤收发器,SFP+,850 nm,1G 至 10G,0.003 公里 |
SFP-10G-AOC10M | AOC 光纤收发器,SFP+,850 nm,1G 至 10G,10m |
QSFP-H40G-AOC10M | 光收发器,QSFP+,40G,(850nm,10m,AOC) |
QSFP-4SFP10-AOC10M | 光模块-QSFP+-40G-(850nm,10m,AOC) (可对接4个SFP+光模块) |
QSFP-100G-AOC10M | 高速收发器,QSFP28 至 QSFP28 AOC,850 nm,100G,0.01 公里 |
电源模块 | |
PAC-2200WF | 2,200W交流电源模块 |
PDC-2200WF | 2,200W直流电源模块 |
W2PSA0800 | 800W交流电源模块(黑色) |
软件 | |
ET1SBSM28000 | S12700 V200R008C00软件 |
ET1SBSM2A000 | S12700 V200R010C00软件 |
ET1SBSM2B010 | S12700 V200R011C10软件 |
ET1SBSM2C000 | S12700 V200R012C00软件 |
ET1SBSM2D000 | S12700 V200R013C00 主机软件 |
执照 | |
ET1SMPLS0000 | MPLS功能许可证 |
ET1SNQA00000 | NQA功能许可证 |
ET1SIPV60000 | IPV6功能许可证 |
ET1SSVFF0000 | SVF功能License(仅适用于S12700系列) |
ET1SVXLAN000 | VXLAN增强功能许可证(适用于S12700系列) |
ET1SFIB128K0 | X系列LPU FIB资源许可-128K |
ET1SFIB512K0 | X系列LPU FIB资源许可-512K |
ET1SWL512AP0 | WLAN接入控制器AP资源许可-512AP(配合X系列LPU使用) |
ET1SWL128AP0 | WLAN接入控制器AP资源许可-128AP(配合X系列LPU使用) |
ET1SWL64AP00 | WLAN接入控制器AP资源许可-64AP(配合X系列单板使用) |
ET1SWL16AP00 | WLAN接入控制器AP资源许可-16AP(配合X系列单板使用) |
L-ACU2-128AP | ACU2无线接入控制器AP资源许可(128AP) |
L-ACU2-256AP | ACU2无线接入控制器AP资源许可(256个AP) |
L-ACU2-384AP | ACU2无线接入控制器AP资源许可(384AP) |
L-ACU2-512AP | ACU2无线接入控制器AP资源许可(512个AP) |
文档 | |
ET1IV2RDC0E0 | S12700系列敏捷交换机 V200R013C00 产品文档 |
8. 产品优势总结
作为 华为CloudEngine S12700系列, 这 S12704 Switch combines modularity, energy efficiency, and investment protection. Its scalable architecture allows for gradual upgrades without service disruption, while native support for IPv6 and SDN ensures compatibility with next-generation networking trends. Designed for mission-critical environments, this switch offers a balanced mix of performance, flexibility, and cost-effectiveness — making it a smart choice for forward-looking enterprise network planning.


运输和交付
运送方式
通过值得信赖的承运商进行全球运输:
- 标准:7-15个工作日
- 加急:3-7 个工作日
- 本地送货(如有)
处理时间
订单验证后 1-2 个工作日内发货。
追踪与职责
发货后将通过电子邮件发送追踪信息。如有关税/进口费用,由买家承担。
延误
由于海关、假期或天气原因偶尔会发生延误。
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