1949 - Zuoyan Zhu set up the hardware workshop, the specialized in hardware manufacturing: Hutch ark parts and lock parts.

　　1970 - Dinghuan Zhu's son - Chongqin Zhu, He set up the individual hardware factory. Specialized is engaged in and the development of aluminum and copper casting and bicycle spare parts production and development.

　　2002 - Chongqin Zhu's son - Wencheng Zhu and Changxi Sun are set up garage, the specialty is engaged in the car and bus repair services, At the same time provide coach components development service.

　　2006- Establishment of Ruian passenger car accessories sales center.

　　2008 -Establishment of Ruian Keno trade Co. Ltd.

　　2010 -Establishment of Ruian WBACC Auto Parts Co., Ltd, start WBACC brand, the specialty is

　　Engaged in the household air treatment, Car air treatment, industrial air treatment.

　　2012 - Acquisition Tanosen filter, set up KENO group (China) Co., Ltd.

　　2013 - And Hno hardware strategic partner agreement.

　　2014 - Acquisition Ningbo Weiyake auto parts Co., Ltd.

　　2015 - Establishment of Keno group international department. 2016 - Acquisition Martha China.