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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![What Is The Purpose Of A Disconnecting Switch?]()
Jul 15, 2026What Is The Purpose Of A Disconnecting Switch?Use Disconnect Switches Disconnect switches (also known as knife switches or disconnects) are one of the most widely used switching devices in power system. ...view more -
![What Is A High-voltage Disconnect Switch?]()
Jul 01, 2026What Is A High-voltage Disconnect Switch?High voltage circuit breaker (also known as high voltage knife switch or isolation knife switch) is one of the most widely used and basic high voltage switch...view more -
![What Is The Function Of An Air Circuit Breaker?]()
Jun 15, 2026What Is The Function Of An Air Circuit Breaker?The Function of Air Circuit Breakers The core function of an air breaker,also known as an air switch or automatic air switch, can be summed up in one sentenc...view more
