On November 16, 2018, the testing center of Guangzhou honsea chemical co. LTD., a testing organization of Guangzhou honsea chemical co. LTD., formally approved the (CNAS) of China National Accreditation Committee for conformity Assessment and obtained the CNAS approval certificate. So far, our center has the technical ability to carry out testing services in accordance with the corresponding recognized standards, and the technical level and ability have reached international standards.