| Type | Application | Applied material | 
| Ring inductor ballast | Interlayer insulation | DuPont Teijin Film / DuPont Hongji Film | 
| EI type magnetic ballast | Primary/secondary insulation | Soflex?NMN,Soflex?DMD,NOMEX? | 
Founded in Hong Kong in 1986, currently has five branches in China;
DuPont China and Hong Kong distributor;
Acting brands are: DuPont, Axal, Renazhi, Toyo Express, Kejibi, etc.;
In 2003, the company registered the SOFLEX? trademark and developed and produced products such as NHN.
A Hong Kong-funded high-tech enterprise integrating R&D, production, sales and service.
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