About
our company
Since its inception in 2010, our first plant has grown to become one of the largest manufacturer of metal parts in China. From the beginning, Granso produces a broad, tailored, comprehensive range of metal parts. Cooperating with famous brand, CHNT, DELIXI as well as HUAWEI, Granso's annual output value has reached 60 million dollars. Then, Granso has developed and entered the field of high-voltage distribution switches, achieving remarkable results up to today.
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WHY
CHOOSE US
Provide excellent service and prioritize the interests of customers. Innovation constantly pursues high standards.
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Advanced Scientific ResearchCooperate with well-known brands CHNT, Delixi, and Huawei.
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High Quality EquipmentGranso produces a wide range of customized and comprehensive metal parts.
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Professional ManufacturerThe self-production rate of parts in our company is as high as over 90%.
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One-Stop ServiceEnsure to provide users with excellent pre-sales, in sales, and after-sales services.
Quality first is
GRANSO's unwavering pursuit.
Granso insists on manufacturing products according to international quality standards and meets customer needs by ensuring timely delivery and providing excellent service.
Our hot sale products
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![Air Insulated]( "Air Insulated")
Air InsulatedAir isolated circuit breakers with disconnector which is used in eco-friendly switchgear and air insulated switgear (AIS), utilize a semi-encapsulated...
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![Rmu Breaker]( "Rmu Breaker")
Rmu BreakerThis 12KV circuit breaker with disconnector in the environmental friendly switchgear, features a semi-encapsulated structure and offers advantages such as...
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![600 Amp 3 Phase Fused Disconnect]( "600 Amp 3 Phase Fused Disconnect")
600 Amp 3 Phase Fused Disconnect600 amp 3 phase fused disconnect ensure on-load connection and disconnection of circuits, providing reliable overcurrent and short-circuit protection.
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![200 Amp Fused Disconnect]( "200 Amp Fused Disconnect")
200 Amp Fused Disconnect200 amp fused disconnect is suitable for AC 50/60Hz, rated working voltage 400V and below, and rated current up to 630A.
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![Earth Breaker Switch]( "Earth Breaker Switch")
Earth Breaker SwitchThe F unit earth breaker switch of the gas- insulated switchgear is a load switch fuse combination module, which is equivalent to the outgoing line of the...
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![Air Insulated Circuit Breaker]( "Air Insulated Circuit Breaker")
Air Insulated Circuit BreakerThis 12KV air insulated circuit breaker, also known as an disconnect switch, features a distinct disconnect point and an integrated spindle structure.
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![Hv Disconnect Switch]( "Hv Disconnect Switch")
Hv Disconnect Switchhv disconnect switches are AC 50Hz outdoor high-voltage electrical equipment with rated voltages of 10kV and 15kV.
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![High Voltage Isolator Switch]( "High Voltage Isolator Switch")
High Voltage Isolator SwitchGN27-40.5(C)(D) type high voltage isolator switch, suitable for indoor installations with a rated voltage of 40.5kV and a three-phase AC frequency of 50Hz....
Latest news and events
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![Switch Selection Guide: Comprehensive Analysis Of Key Parameters And Scenario Applications]()
Nov 15, 2025Switch Selection Guide: Comprehensive Analysis Of Key Parameters And Scenario ApplicationsAs the core part of circuit control, electrical switch directly affects electrical safety and system stability. From home decoration to industrial distributi...view more -
![Electrical Switches Principle And Classification: A Comprehensive Analysis From Basis To Intellig...]()
Nov 01, 2025Electrical Switches Principle And Classification: A Comprehensive Analysis From Basis To Intellig...As the core control element of electric power system, Electrical switch has experienced technological leap from mechanical control to intelligent management ...view more -
![SF6-Free Gas-Insulated Switchgear]()
Nov 24, 2025SF6-Free Gas-Insulated SwitchgearSulfur hexafluoride (SF6) is widely used as an electrical insulator and arc-quenching gas in power transmission and distribution equipment.view more
