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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![Circuit Breaker Operating Mechanism]()
Dec 02, 2025Circuit Breaker Operating MechanismThe operating mechanism is an important component of a high-voltage circuit breaker, consisting of an energy storage unit, a control unit, and a force transm...view more -
![Design Of Air-insulated Switchgear For Overseas Projects]()
Dec 01, 2025Design Of Air-insulated Switchgear For Overseas ProjectsMore and more domestic switchgear manufacturers are going global, producing switchgear products for overseas customers.view more -
![The Application Of Electrical Switches in The New Energy Field: A Key Role in Photovoltaic, Wind ...]()
Dec 01, 2025The Application Of Electrical Switches in The New Energy Field: A Key Role in Photovoltaic, Wind ...In the field of new energy, as core control and protection equipment of power system, power switch plays a vital role in the fields of photovoltaic, wind pow...view more
