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Designing & manufacturing the most reliable and efficient telecom & data communication devices in the industry.

Fiber Optic Multiplexers | Interface Converters | Serial Connectivity | Ethernet Switches Products

About Us

Hangzhou Grancom Information Technology Co., Ltd. is a Manufacturer & Exporter of reliable and competitively priced Multiplexers, Optic Multiplexers, Ethernet Switch, Serial Device Servers, Serial Communication Systems, Equipment Room Out-Band Management Systems, Broadband Information Transfer And Access Systems, And Equipment Room And Base Station Monitoring Systems from China. Since 2001, clients from different countries across the globe have come to trust Grancom to deliver superior products for their specialty applications. It was in the year 2010 that our ISO 9001:2008 certified company was qualified as the national high-tech enterprise.

Our extensive product line is categorized into Interface Converters, Multiplexers, Optic Multiplexers, Serial Device Servers, Fiber Optic Multiplexers, Serial Connectivity, Ethernet Switches Products and The Internet of things; ideal for telecommunication industry to help manage the networks, technical expertise, and other resources. The serial device servers are accessible in C9004/8H series, C9004/8T series, C9xxx series, C90x series, and C900xT series. These ultra-lean and user-friendly servers can be applied in fields like PLCs, sensors, meters, motors, barcode readers and more.

The company's annual turnover is USD 90 Lakhs, out of which, USD 43,20,000 revenue is generated from exports. Backed by a support of 100 dedicated employees, continuous research & development, and technology, we are able to produce 2000 devices per month. We export 48% of the total produce to various countries, that include Australia, Canada, France, United Kingdom, Indonesia, India, Korea South, New Zealand, Sweden, and United States.

Research & Development

A company's R&D department is the foundation for its design creativity and reliability. We have have invested considerable resources in this department. The department comprises of a group of around 21-30 highly educated and trained R&D professionals, committed to develop stable, fast, and cost-effective industrial data communication devices like Multiplexers, Optic Multiplexers, etc. They work hard to enhance the validity of the devices, when the reliability is critical in key markets. Plus, they work on to maximize the technology, automation platforms and strategies to bring to clients the solutions, needed to meet their business objectives.


2-Port Serial Device Servers
2-Port Serial Device Servers
RS485 Converter
RS485 Converter
1 Port RS232/RS422/RS485 Serial Ethernet Converter
1 Port RS232/RS422/RS485 Serial Ethernet Converter
8 Port 3 In 1 Serial Device Servers
8 Port 3 In 1 Serial Device Servers
Gigabit Ethernet over TDM Aggregation Gateway
Gigabit Ethernet over TDM Aggregation Gateway
E1 over Eth Converter
E1 over Eth Converter
E1 Over IP Converter
E1 Over IP Converter
Ethernet over 4,8 or 16 E1 Aggregation Gateway
Ethernet over 4,8 or 16 E1 Aggregation Gateway
96 Voice (Fxs/Fxo) Pots Fiber Multiplexer
96 Voice (Fxs/Fxo) Pots Fiber Multiplexer
360 Port Voice PCM Multiplexer
360 Port Voice PCM Multiplexer
8 Channel Fxs Fxo Ports Fiber Multiplexer
8 Channel Fxs Fxo Ports Fiber Multiplexer
16E1 Fiber Optic Equipment
16E1 Fiber Optic Equipment
Modular Integrated Access Multiplexer
Modular Integrated Access Multiplexer
4E1 PDH Multiplexer
4E1 PDH Multiplexer
1, 2 or 4 port E1 over Gigabit Ethernet TDM Pseudowire Access Gateway
1, 2 or 4 port E1 over Gigabit Ethernet TDM Pseudowire Access Gateway
2-Port TTL to 10/100 Mbps Embedded Serial Devices
2-Port TTL to 10/100 Mbps Embedded Serial Devices
TTL To Ethernet Modules
TTL To Ethernet Modules
Industrial Serial Device Servers
Industrial Serial Device Servers
2-port RS232/RS422/RS485 Industrial Device Servers
2-port RS232/RS422/RS485 Industrial Device Servers
RS232/RS422/RS485 Industrial Device Servers
RS232/RS422/RS485 Industrial Device Servers
1-port RS-232/422/485 GSM/GPRS/CDMA1x DRU
1-port RS-232/422/485 GSM/GPRS/CDMA1x DRU
GPRS IP MODEM
GPRS IP MODEM
GPS IP MODEM
GPS IP MODEM
E1 to V35 Converter
E1 to V35 Converter
4/8 FXO/FXS+ 10/100M Ethernet+ RS232 E1 converter
4/8 FXO/FXS+ 10/100M Ethernet+ RS232 E1 converter
2-port 10/100M Ethernet + 2-port RS232/RS485/RS422
2-port 10/100M Ethernet + 2-port RS232/RS485/RS422
2-port 10/100M Ethernet + 4-port RS232/RS485/RS422
2-port 10/100M Ethernet + 4-port RS232/RS485/RS422
Fiber Multiplexers
Fiber Multiplexers
Fiber Optical Multiplexers
Fiber Optical Multiplexers
Fiber Optical Multiplexers
Fiber Optical Multiplexers
5 Port 10/100 Cascade Ethernet Switches
5 Port 10/100 Cascade Ethernet Switches
4GSFP Gigabit Ethernet Switch
4GSFP Gigabit Ethernet Switch
IES Gigabit POE Ethernet Switch
IES Gigabit POE Ethernet Switch
5G Port Gigabit Industrial Ethernet Switches
5G Port Gigabit Industrial Ethernet Switches
Fiber Optic Media Converter
Fiber Optic Media Converter
1 Port 10/100/1000M Ethernet Media Converter
1 Port 10/100/1000M Ethernet Media Converter
1-port SFP Slot10/100/1000Ethernet Media Converter
1-port SFP Slot10/100/1000Ethernet Media Converter
10/100M BIDImm,Dual Fibre Ethernet Media Converter
10/100M BIDImm,Dual Fibre Ethernet Media Converter
Power and environment monitoring system
Power and environment monitoring system
Base station fresh air wireless centralized monitoring system
Base station fresh air wireless centralized monitoring system
The Internet of things
The Internet of things
The Internet of things
The Internet of things
Workshop
Workshop
Workshop
Workshop
Workshop
Workshop
7F Building 1, No.200 Zhenhua Road, Hangzhou - 310030, Zhejiang, China
Phone :86-571 -56928136
Fax :86-571-58119069
Mrs. Ella Wang

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