SRET was founded in Shenyang, Liaoning province, China, in the year of 1989, by 5 university senior professors, with an original mindset of being an industrial pioneer of China's tube mill machine manufacturing. For the past 30 years, SRET has remained the industrial leadership with continuous innovation and quality improvement. Today, SRET designs, engineers, manufactures, and supplies a full range of ERW tube mill machinery that satisfies your variety of application needs.