About Us

About Us

Sihai Optical Fiber was founded in 1997 and is a joint-stock cooperative high-tech enterprise。

Since its establishment in China for 26 years, the company has actively constructed optical network engineering and security social engineering。

The company is mainly a manufacturer engaged in the research and development, production, and sales of fiber optic equipment and wireless network equipment. The company currently has nearly a hundred outstanding talents and has obtained over 60 honors such as certificates, qualifications, patents, inventions, etc. Our products have CE, RoHS, FCC, and TUV certifications. Our products are exported to many countries, such as India, Israel, Thailand, the Philippines, Pakistan, Indonesia, Malaysia, South Korea, Russia, Ukraine, Demani, Spain, Germany, Brazil, Colombia, Chile, Argentina, South Africa, Kenya, Algeria, North America, Australia, etc. We also welcome OEM and ODM orders. The high-quality service provided to our customers has earned us a good reputation in the region. To learn what we can do for you, please feel free to contact us. We look forward to establishing a good long-term business relationship with you and achieving a win-win situation.

CNFIBERNET (China Fiber Optic Network Supply Chain)

“In the '97 Fiber Optic Year', China's Four Seas Fiber Optics actively promoted fiber optic communication technology in China with the help of the global leading technology of the US Fiber Optic Network Research Institute. During this 26 year journey, outstanding contributions have been made to the country's broadband IP network and fiber to the home field. The entire series of CNFIBERNET brand fiber optic communication products are also exported to 66 countries and regions worldwide.

4000 +
Satisfied Clients
60 +
Exporting Countries & Cities
29 Year
Industry Experience
Circle Decoration Circle Decoration

Why G657A2 Fiber Is Widely Adopted Across Diverse Industries

Excellent bending resistance and stable transmission make it the preferred optical fiber for complex wiring environments

Wide Application Range of G657A2 Bare Fiber

Benefiting from ultra‑low bending loss, great flexibility and consistent broadband performance, our G657A2 bare fiber adapts to both traditional communication projects and cutting‑edge high‑tech industries. It works steadily under compact installation and frequent wiring bending conditions to realize high‑speed, low‑delay data transmission. Our factory supplies bulk G657A2 bare fiber for the following mainstream scenarios:

FTTH & Indoor Building Network:Home fiber access, multi‑story building indoor wiring and weak current communication system

AI Computing & Data Center Interconnection:Short‑distance internal connection of computing cabinets, dense wiring in server rooms

UAV & Mobile Optical Communication:Light‑weight fiber links for long‑range drone data return and airborne communication modules

Intelligent Monitoring & Security Engineering:Surveillance system wiring in narrow pipelines and curved routing

5G Indoor Coverage:Indoor distributed antenna systems for shopping malls, office buildings and industrial parks

Smart City & Industrial Automation:On‑site flexible cabling for industrial sensing and smart equipment networking

Company Products

recommend

G657A2

G657A2

Model Number:G657a2 Fiber Type:Optical Fibers Use:Fiber Optic Cable/ FPV Warranty Time:3 years

Optical cable

Optical cable

GYTA/GYTS/GYXTW/GYTA53/GYTS53: 4 cores, 6cores, 8 cores, 12 cores, 16 cores, 24 cores, 36 cores,48 cores, 72 cores, 96 cores, 144 cores, 168 cores;Length 2000 meters per wooden tray, 3000 metersper wooden tray. Indoor optical cable, horizontalwiring optical cable, single mode optical cable,OM3 OM4 OM5 multimode optical cable

Fiber optic jumper

Fiber optic jumper

Fiber optic jumper SC-SC, LC-LC, FC-FC, SC-LC, SC-FC, FC-LC, 5 meters, 10 meters, 20 meters, 30 meters, 50 meters, 75 meters, 100 meters; 6-core bundle, 12-core bundle, metal armored fiber optic jumper, emergency communication repair fiber optic jumper, temperature measurement fiber optic jumper, polarization maintaining fiber optic jumper

Fiber optic accessories

Fiber optic accessories

Fiber optic distribution frame -4 ports/6 ports/8ports/12 ports/24 ports/48 ports/72 ports/96 ports;ODF fiber optic distribution frame -24 cores/48cores/72 cores/96 cores; Three in one fiber opticdistribution frame -576 cores/720 cores/1440 cores;Fiber optic cable handover box -1152 cores/576cores/288 cores/144 cores/96 cores.

Fiber optic transceiver

Fiber optic transceiver

100M/Gigabit single mode single fiber/dual fiber20km/40km/60km/80km/100km/120km; Optional:SNMP based network managed fiber optic transceiver. The specifications are 10/100Mbps, 10/100/1000Mbps; Single mode single fiber/single mode dual fiber.

One optical multi electric fiber optic transceiver

One optical multi electric fiber optic transceiver

The specifications of one optical 2 electrical and one optical 4 electrical fiber optic transceiver include: 10/100Mbps, 10/100/1000Mbps; Single fiber transmission/dual fiber transmission; 20/40/60/80/100/120 kilometers; Optional SNMP network management specifications.

Fiber optic transceiver frame

Fiber optic transceiver frame

The specifications of modular fiber optic transceivers include single power supply, dual power supply, and -48V power supply with 10 and 16 ports; Optional intelligent SNMP network management module and management software can achieve remote management function.

SFP fiber optic module socket

SFP fiber optic module socket

CNF-86210IN SFP fiber optic module socketSupported Protocols:10G Ethernet (LAN & WAN);1G Ethernet, 1G Fibre Channel, 10G FibreChannel, 25G Fibre Channel, Low powernsumption, SFP+ interfaces, tunable DWDM,DWDM, CWDM, BiDi, LR and SR, Client and lineperformance monitoring, PRBS traffic test, · Plugand play operation.

Service response:

7 * 24-hour standby and timely response service。

Service Commitment:

We will strictly follow the national three guarantees policy to provide services that satisfy consumers.

The following situations are not covered by the warranty:

1. Human induced damage。 2. Damage caused by natural disasters such as floods and fires, as well as force majeure factors。 3. Under normal operating conditions, natural wear, aging, etc.

Our Recommendation

Comments From Customers

Jack

d**********n@yahoo.com

“ The product introduction is very detailed, and I am very satisfied.“

P

Parker Robert

Pu*****8@gmail.com

“ “ The product quality is very good, and the customer service personnel are also very professional. We quickly received the product. Looking forward to the next collaboration....““

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