Our company was founded in 1986, It is one of the leading companies that specialized in producing transformer accessories, such as off circuit tap changer, on load tap changer, temperature controller, cooling fan, oil level indicator, pressure release valve. It sells well both at home and abroad and enjoys a good fame. Our company covers an area of 10 thousand square meters and 200 staff, The fixed assets of 25 million yuan, annual output is 400 thousand, With annual sales of 40 million yuan.After more than 20 years development, the company has been strong in technical resource, and have accumulated rich experience of systematic design and practice and also established integrated product series. We reached and developed tap changer form single to three phase with the help of Dalian university of technology. and obtained some technology patents. One of the product of the patent is regulating capacity on load tap changer. We add regulating capacity into its name in order to differ from the common on load tap changer and reinforced the advantage . one of the most advantage is saving energy, reduce the on load loss. It proved that only 27% of no load loss is equivalent to the largest capacity operations. We have reached more than 30 series and more than 5000 sorts of specification group. We can satisfy the requirement of tap changer used the voltage of 110KV and less than 110KV transformer. We can also undertake designing and making all kinds of special switches according to the technical parameters, special structure and quality required by the customers.We have a very strict quality controlling system which promises the product we produced are always of best quality. We pride ourselves on quality, that is our best selling point.We are keeping good commercial communications with domestic transformer enterprise .Our product are export to Indonesia, Switzerland, Thailand New Zealand and Peru ,more than 10 countries and regions.