The sea embraces all rivers, and tolerance is great; Putting people first, exploring and innovating. Hidden stone testing is committed to product testing and certification services. Jiangsu head office is located in Xishan Economic Development Zone, which is on the beautiful coast of the Taihu Lake Lake in Wuxi, and has obtained dual qualifications of CMA and CNAS. Adhering to the quality policy of "science, fairness, innovation, and efficiency", we have served over 30000 customers and have a good reputation in the industry. Hidden Stone Testing was established in 2008. After 10 years of development, our testing capabilities have expanded to include corrosion testing, valve testing, metal material testing, reliability testing, and more. Industry is more valuable than expertise, and technology is stronger than precision. Anjiewen Testing is at the forefront of metal corrosion testing such as hydrogen sulfide related corrosion and corrosion assessment, as well as valve leakage testing such as API624 and API641. With solid professional knowledge and bold innovative spirit, we have made continuous progress in product testing, engineering quality control, product technology improvement and other fields. We have always taken "improving industrial quality, serving enterprises, and win-win market" as Anjiewen's consistent policy. At present, we have long-term and stable cooperation with more than 30 Fortune 500 companies such as PetroChina, Sinopec, CNOOC, GE, PDO, etc We have also participated in numerous testing projects in fields such as oil and gas fields, nuclear power, and ships. Our projects include the K2/K3 nuclear power project of China National Nuclear Corporation in Karachi, the 11th section project of China Railway Group's Changzhou Rail Transit Line 1, numerous projects in Zhongyuan Oilfield and Puguang Gas Field, CNOOC Petrochemical Salt Integration Project, the "Hualong One" demonstration project - Fuqing Unit 5 and 6 nuclear power project, Zhoushan 10000 ton refining and chemical integration project, etc. In addition to long-term cooperation with major domestic enterprises, we actively align with international standards and complete testing for some overseas projects. For example, Oman Petroleum Development Company conducted corrosion related tests. In addition, the inspection also cooperated with key universities, quality supervision, special inspection State Key Laboratory, etc., and achieved fruitful results in nondestructive testing, buried pipeline testing, tank testing, lifting equipment testing and other fields.