Nanjing BKN Automation System Co., Ltd., originated from the eddy current testing laboratory of the Nanjing University of Technology. It is an eddy current testing benchmark enterprise and has long been committed to the development and production of bearing hardness and crack eddy current screening equipment. Our products are widely used in aerospace, electricity, petroleum, natural gas, metallurgical machinery, and automotive industries and we have high proprietory intellectual property rights patent technology. Our products are exported to USA, Russia, Singapore, Thailand, India, Hongkong, Taiwan, Yemen, Kazakhstan, Iran, Japan, Korea, Brazil. BKN has formed a social scientific research cooperation network with well-known universities and research institutes in China, which has a strong R&D and production capacity. It guarantees the leading and word-class technology position of BKN industrial nondestructive testing technology. BKN adheres to the concept of specialization, refinement, and strength, focusing on stainless steel pipe on-line and off-line automatic flaw detection, and has achieved good results in this field and become leaders in the industry. The eddy current sorting machine is the company's flagship product, suitable for rapid sorting of bearing cracks, mixing, hardness deviation, burns. The whole system consists of four parts: testing equipment, testing probe, mechanical and electrical. Realize automatic detection of defects, automatic sorting, automatic alarm. BKN is a high-tech enterprise in China, an outstanding private technology enterprise in Jiangsu Province, a AAA credit enterprise of Bank of China, and a national innovation leader brand. Our company integrates technology, industry, trade, and integration, has advanced production equipment, excellent research and development team,