As the technical leader, worked in ThermoFisher Scientific and Palas instrument successively, taking full charge of the environmental monitoring technical support work, familiar with the operation mode of environmental monitoring business, regulations and management requirements. At the same time, as a part-time sales partner, long-term in-depth into the front line of end user and dealer, develop new marketing and application, expand sales opportunities, and maintain good relationship. During these work, supported and completed more than 1000 projects.