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About Us

Guangdong Sihui Instrument Transformer Works Co., Ltd

We, Guangdong Sihui Instrument Transformer Works Co.,Ltd (GDSH) was established in 1988 and located in the mid-west of Guangdong Province, China, and is 63km far from Guangzhou City. Its position is in the Dongcheng district of Sihui City. It’s around 1.5 hours’ drive to New Baiyun International Airport. It covers a total area of about 50,000m2 and the building area is about 30,000m2. The stationary asset of our company is 100 million yuan RMB has been owned. Our productive facilities, inspection and test equipments are complete and perfect.

We, GDSH is a professional current transformer and voltage transformer manufacturer offering superior-quality products. Our main products are 0.72~1000kV current transformers, voltage transformers, combined transformers & insulatioin articles, 6~40.5kV dry-type power transformers, reactors, each kinds of trucks for switchgears, metering devices and so on.
Our policy is: coming close to the international level, being advanced in the industry and aiming at harmoniousness and winning together.
We’d like to build friendly partner relationship with native and foreign customers for a more beautiful future.

Our Products

Many kinds of products have been produced professionally.

1) Epoxy resin insulated products: Voltage level ranges from 7.2~72.5kV, including single-phase and 3-phase CTs, VTs, insulators, ect. They are can be used in indoor or outdoor environments for medial voltage GIS and Switchgears.

2)High voltage products insulation by oil or gas: Voltage level range from 40.5~1000kV, including CTs, IVTs, CVTs, SSVTs and combined transformers, etc. They are can be used in indoor or outdoor for high voltage GIS and PASS.

3)Dry-type power transformers, reactors, metering devices and switches: Voltage level rangs from 72.~40.5kV, including single-phase and 3-phase, they are can be used in indoor or outdoor for medial voltage AIS and switchgears.

Our products have been sold everywhere domestically. Many domestic key projects have applied our products such as Beijing Olympic Games project, Beijing Subway, Beijing Capital airport, Shanghai Pudong airport, Guangzhou Baiyun International Airport, Guangzhou Subway, Sanxia project and Jiuquan Satellite Launch Centre of China and so on. And our products also have been exported to the areas and countries of Europe, America, Oceania, Asia and Africa.  We locate near Guangzhou, we enjoy convenient water, land, and air transportation.

We attained ISO9001/ISO14001/OHSAS18001 Quality, Environmental and Occupational Health & safety management systems, CE, GOST(Russia) and KEMA certification.


Our Advantages

Kema Test Certificate

CE Certificate (LVD)

Russian Certification

Russian Certification


Laboratory Accreditation Certificate


Kazakhstan Certificate