中正检测集团（简称OTC），是合法从事检验、鉴定、测试、验货和认证的第三方服务机构，致力于商品供应链的质量鉴定和审核业务，专注于提供各个行业的质量解决方案。Zhongzheng Group(OTC CHINA CERTIFICATE AND TESTING CENTER)is the lawful exercise of inspection,identification,testing,products inspection and certification third-party service agency.We are committed to quality appraisal,examination and verification business of the global commodity supply chain,and concentrate on providing quality solutions in a...[详细介绍]