Shenzhen Zhengtong Testing Technology Co., Ltd. (ZTT for short) is located on the first floor of Building A, Huafeng Creative World, Hangcheng Industrial Zone, Taoyuan Community, Xixiang Street, Baoan District, Shenzhen, Guangdong Province. It is a company mainly engaged in product electromagnetic compatibility testing (EMC), radio frequency Professional third-party testing institutions for testing, safety, battery, chemical test, food contact material analysis (such as FDA).