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| Brand Name: Sun Communication | Certification: FCC, CE, RoHS, ISO9001 | 
| Model Number: QSFP+40G+ ER4 | Minimum Order Quantity: 100 PCS | 
| Place of Origin: Guangdong, China | Price: Negotiable | 
| Dongguan sun Communication Technology Co., Ltd. [Guangdong,China] | |
| Verified Supplier | |
| Brand Name: Sun Communication | Certification: FCC, CE, RoHS, ISO9001 | 
| Model Number: QSFP+40G+ ER4 | Minimum Order Quantity: 100 PCS | 
| Place of Origin: Guangdong, China | Price: Negotiable | 
| Dongguan sun Communication Technology Co., Ltd. [Guangdong,China] | |
| Verified Supplier | |
| Brand Name: Huawei | Model Number: 02311QTR | 
| Minimum Order Quantity: 1 | Delivery Time: Within 2-3 working days | 
| Payment Terms: T/T, Western Union,Paypal | Place of Origin: China | 
| Dongguan Blueto Electronics&Communication Co., Ltd [Guangdong,China] | |
| Verified Supplier | |
| Model Number: QSFP-SR4(QSFP-40G-SR4) | Minimum Order Quantity: 1pcs | 
| Delivery Time: 3-5days | Payment Terms: L/C, T/T, Western Union, MoneyGram | 
| Place of Origin: China | Supply Ability: 80000/day | 
| WanyYi Telecom Tech Co.,Limited [China] | |
| Active Member | |
| Model Number: QSFP-SR4(QSFP-40G-SR4) | Minimum Order Quantity: 1pcs | 
| Delivery Time: 3-5days | Payment Terms: L/C, T/T, Western Union, MoneyGram | 
| Place of Origin: China | Supply Ability: 80000/day | 
| WanyYi Telecom Tech Co.,Limited [China] | |
| Verified Supplier | |
| Brand Name: Gvdlink | Certification: CE,ROHS,FCC | 
| Model Number: GVD-QSFP-40G-SR4 | Minimum Order Quantity: 1pcs | 
| Delivery Time: 1-5 working days | Payment Terms: T/T, Western Union, MoneyGram, L/C,Paypal | 
| Shenzhen Gaveid communication Technology Co.,Ltd [Guangdong,China] | |
| Verified Supplier | |
| Brand Name: E-link China | Certification: CE, RoHS, FCC | 
| Model Number: LNK-QSFP-LR4 | Minimum Order Quantity: 1 piece | 
| Delivery Time: 3-7 working days | Payment Terms: L/C, T/T, Western Union, MoneyGram | 
| E-link China Technology Co., Ltd. [Guangdong,China] | |
| Verified Supplier | |
| Brand Name: Sourcelight or OEM | Certification: CE/FCC/RoHS/TUV/UL | 
| Model Number: QSFP-40G-SR4 | Minimum Order Quantity: 1PCS | 
| Delivery Time: Shipped in 1 days after PO confirmed | Payment Terms: L/C, D/A, D/P, T/T, Western Union, MoneyGram | 
| Sourcelight Technology Limited [Guangdong] | |
| Active Member | |
| Brand Name: OLKOPTO | Certification: RoHs, FCC, CE, UL etc | 
| Model Number: OLSQxx4XL-CD40 | Minimum Order Quantity: 1 pc | 
| Delivery Time: 3-5 working days | Payment Terms: T/T or Net 30 days | 
| Shenzhen Olinkcom Technology Co.,Ltd [China] | |
| Verified Supplier | |
| Brand Name: Cisco | Model Number: QSFP-40G-SR-BD | 
| Minimum Order Quantity: 1 unit | Delivery Time: 1-2 work days | 
| Payment Terms: L/C, D/A, D/P, T/T, Western Union, MoneyGram,PayPal,Alipay | Place of Origin: USA | 
| Shenzhen Bo-Net Technology Co., Ltd. [Guangdong,China] | |
| Active Member | |
| Brand Name: Fiber Mall | Minimum Order Quantity: 1 | 
| Place of Origin: China | |
| FIBERMALL CO.,LIMITED [Hongkong,China] | |
| Active Member | |
| Minimum Order Quantity: 1 | Place of Origin: China | 
| FIBERMALL CO.,LIMITED [Hongkong,China] | |
| Active Member | |
| Brand Name: Fiber Mall | Minimum Order Quantity: 1 | 
| Place of Origin: China | |
| FIBERMALL CO.,LIMITED [Hongkong,China] | |
| Active Member | |
| Brand Name: Neuter, OEM | Certification: CE/FCC/RoHS/TUV/UL | 
| Model Number: QSFP-40G-LR4 | Minimum Order Quantity: 1PCS | 
| Delivery Time: Within 1-3 working days after PO confirmed | Payment Terms: T/T, Western Union, L/C | 
| Ascent Optics Co.,Ltd. [Guangdong,China] | |
| Verified Supplier | |
| Brand Name: Cisco | Certification: CE | 
| Model Number: QSFP-40G-LR4 | Minimum Order Quantity: 1 PC | 
| Delivery Time: 1-2 DAYS | Payment Terms: T/T, Western Union, Paypal | 
| LonRise Equipment Co. Ltd. [Shanghai,China] | |
| Verified Supplier | |
| Brand Name: UTOPTEK | Certification: CE FCC RoHs | 
| Model Number: QSFP-40G-ER4 | Minimum Order Quantity: 1piece | 
| Delivery Time: 1-2days | Payment Terms: T/T, Western Union,Paypal, Alipay,Wechat etc. | 
| Shenzhen UTOP Technology Co., Ltd. [Guangdong,China] | |
| Site Member | |
| Brand Name: Compatible module | Certification: CE | 
| Model Number: QSFP+ 40G-GR4 | Minimum Order Quantity: 1 PC | 
| Delivery Time: 1-2 days | Payment Terms: T/T, Western Union,Paypal | 
| LonRise Equipment Co. Ltd. [Shanghai,China] | |
| Verified Supplier | |
| Brand Name: CY COM | Certification: ISO9001:2015, ISO14001:2015, ROSH | 
| Model Number: QSFP+ 40G LX4 | Minimum Order Quantity: 10PCS | 
| Delivery Time: 5-8 days | Payment Terms: T/T, Western Union | 
| Shenzhen CY COM Product Co., Ltd [Guangdong] | |
| Verified Supplier | |
| Brand Name: HILINK | Certification: CE FCC Rohs | 
| Model Number: 40GBase-ER4 | Minimum Order Quantity: 1pcs | 
| Delivery Time: 1-6 days | Payment Terms: T/T, Western Union | 
| Shenzhen HiLink Technology Co.,Ltd. [Guangdong,China] | |
| Verified Supplier | |
| Brand Name: Finisar | Certification: ROHS | 
| Model Number: FTL4C1QE1C | Minimum Order Quantity: 1 | 
| Delivery Time: 3-4 days | Payment Terms: L/C, T/T, Western Union, MoneyGram, D/A | 
| TOPSTAR TECHNOLOGY INDUSTRIAL CO., LIMITED [China] | |
| Verified Supplier | |