Mudanjiang Construction Material Petroleum Machinery Co.,Ltd in Heilongjiang province is two units of measurement, is approved by the Mudanjiang Municipal Technical Supervision authorized to build standard unit. Development of vernier type, class, class of instructions such as micrometer standard value transfer. Mudanjiang building materials petroleum machinery limited liability company detection equipment, detection means perfect, has a variety of physical and chemical testing equipment, can meet a variety of product physical and chemical aspects of detection, product quality to provide a strong guarantee.