China Science Testing Technology Services (Guangzhou) Co., Ltd. (China Science Testing) is a comprehensive third-party inspection and testing certification institution under the Chinese Academy of Sciences Holding Co., Ltd. (China Science Holding). Its predecessor is the Analysis and Testing Center of the Chinese Academy of Sciences Guangzhou Institute of Chemistry, which was established in 1958 by the Chinese Academy of Sciences Guangzhou Chemical Co., Ltd. It is a comprehensive public service institution integrating inspection and testing, certification, identification, technical services, consulting and training.

Zhongke Testing has subsidiaries including Zhongke Testing Technology Services (Guangzhou) Co., Ltd., Zhongke Testing Technology Services (Jiaxing) Co., Ltd., Zhongke Testing Technology Services (Zhanjiang) Co., Ltd., Zhongke Testing Technology Services (Chongqing) Co., Ltd., Zhongke Testing Technology Services (Dongguan) Co., Ltd., Zhongke Guanghua (Chongqing) New Materials Research Institute Co., Ltd., Zhongke Guanghua Testing Technology Services (Shenzhen) Co., Ltd., Zhongke Certification Technology Services (Guangzhou) Co., Ltd., Guoke Testing Technology Services (Shandong) Co., Ltd., Ningbo Zhongke Testing Technology Services Co., Ltd., Hangzhou Lvyi Environmental Technology Co., Ltd., Guangzhou Lvying Environmental Technology Co., Ltd., and offices throughout the country.

Zhongke Testing has passed the qualification certification of inspection and testing institutions (CMA), laboratory accreditation of China National Accreditation Service for Conformity Assessment (CNAS), assessment of agricultural product quality and safety testing institutions (CATL), ISO 9001 quality management system, ISO 14001 environmental management system, ISO 45001 occupational health and safety management system, recognition of product testing and testing institutions by China Classification Society, qualification certification of radiation health technology service institutions, and qualification certification of import and export commodity inspection and appraisal institutions. Zhongke Testing has a complete experimental site and various large-scale testing instruments and equipment. It has established industrial consumer goods laboratories, ecological environment laboratories, material reliability laboratories, food safety laboratories, home appliance laboratories, medical and health laboratories, animal toxicology testing experimental centers, and experimental sites suitable for special experiments. Zhongke Testing provides professional inspection, testing, and certification technical services to domestic and foreign customers with its profound technical strength, high-quality service guarantee, credibility, complete qualification capabilities, and convenient nationwide service network.