About Us
1999 ● |
Shanghai Siyuan Trading Co., Ltd. established, acting as the agent of oversea enameled wire equipment |
2003 ● |
Shanghai
Dean Electrical Co.Ltd. established, focusing on R&D of enameled wire
testing instruments |
2004 ● |
Shanghai
SINO Insulation Material Co., Ltd. established Shanghai Dean Electrical Co.Ltd. launched the first enameled wire dielectric loss tester in China |
2009 ● |
Shanghai
SINO Insulation Material Co., Ltd.put in production with an annual production
of 200 tons of composite paper. |
2011 ● |
The
enameled wire dielectric loss tester by Shanghai Dean Electrical Co., Ltd.
obtained the national invention patents |
2012 ● |
Shanghai
Dean Electrical Co., Ltd. was awarded Shanghai New Hi-tech Enterprise. |
2013 ● |
Shanghai
BYT Testing Service Co., Ltd. established |
2014 ● |
Shanghai
SINO Insulation Material Co., Ltd. was awarded Shanghai New Hi-tech Enterprise |
2015 ● |
Shanghai
BYT Testing Service Co., Ltd. obtained the qualification of CMA |
2016 ● |
Shanghai
BYT Testing Service Co., Ltd.obtained the qualification of CNAS. |
2017 ● |
Dean
Group relocated in Lingang, Pudong New Area because of the business
development. |
2018 ● |
Shanghai
SINO Insulation Material Co., Ltd.completed the shareholding reform. |