is registered in HK for the worldwide business, we have two facilities in Shenzhen China, Shenzhen DNP and Shenzhen GF. We are special on mining light and LED industrial lighting for hazardous area from 2005. Our factory had got the ISO9001 certificate in 2007, and got TUV factory audit in 2011, CSA factory audit in 2013, ATEX Quality Assurance Assessment in 2016. We have ourselves testing room in our factory, which has the equipments for the testing of: LED lumens, battery capacitance and inn