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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.


48 Port Serial Device Servers
48 Port Serial Device Servers
32 Port RS232 RS485 Converter
32 Port RS232 RS485 Converter
RS485 to Lan Converter
RS485 to Lan Converter
8 Port 3 In 1 Serial Device Servers
8 Port 3 In 1 Serial Device Servers
Ethernet over 8 or 16 E1 Aggregation Gateway
Ethernet over 8 or 16 E1 Aggregation Gateway
BNC to RJ45 Converter
BNC to RJ45 Converter
E1 over Eth Converter
E1 over Eth Converter
4E1 to Ethernet Converter
4E1 to Ethernet Converter
360 Port Voice PCM Multiplexer
360 Port Voice PCM Multiplexer
96 Voice (Fxs/Fxo) Pots Fiber Multiplexer
96 Voice (Fxs/Fxo) Pots Fiber Multiplexer
8 Channel Fxs Fxo Ports Fiber Multiplexer
8 Channel Fxs Fxo Ports Fiber Multiplexer
4E1 PDH Multiplexer
4E1 PDH Multiplexer
16E1 Optical Fiber Multiplexer
16E1 Optical Fiber Multiplexer
Modular Integrated Access Multiplexer
Modular Integrated Access 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
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
Industrial Serial Device Servers
Industrial Serial 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
Interface Converters
Interface Converters
Interface Converters
Interface Converters
Interface Converters
Interface Converters
E1 Timseslot Cross Connect
E1 Timseslot Cross Connect
Fiber Optical Multiplexers
Fiber Optical Multiplexers
Fiber Multiplexers
Fiber Multiplexers
Fiber Optical Multiplexers
Fiber Optical Multiplexers
4GSFP Gigabit Ethernet Switch
4GSFP Gigabit Ethernet Switch
4+1 Port 100Mbps POE Switch
4+1 Port 100Mbps POE Switch
Ethernet Switches
Ethernet Switches
4 Port SFP + 3 Port RJ45 Switch
4 Port SFP + 3 Port RJ45 Switch
10/100M Fast Ethernet Media Converter
10/100M Fast Ethernet Media Converter
10/100M Fast Ethernet Media Converter
10/100M Fast Ethernet Media Converter
1 Port 10/100/1000M Ethernet Media Converter
1 Port 10/100/1000M Ethernet Media Converter
Fiber Optic Media Converter
Fiber Optic Media Converter
Power and environment monitoring system
Power and environment monitoring system
Base station wireless central monitoring System
Base station wireless central monitoring System
IP-PDU1008 Remote Power Management Devices
IP-PDU1008 Remote Power Management Devices
EM1102 Power and Environment Monitoring System
EM1102 Power and Environment Monitoring System
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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