CONFIDENCE THROUGH TECHNOLOGY. Consumer Testing Technology Co.,Ltd found in 2006, located in Dongguan, Guangdong, belonging to Shenzhen City Investment & Development (Group) Co., Ltd. With 24 branch offices and agencies in all over the world. CTT Vietnam was established in 2019, CTT Vietnam provides Testing, Inspection and Certification - One stop Solution for our valued customers. CTT Vietnam: - Professional Technology - Cost-effective - Quick Response - Trustworthy Partnership