Zhiyuan stem "through a large number of tests and application, the performance of the new set is suitable for nuclear power, prevent leakage, long life, low stem seal to maintain the latest technology, is the most advanced valve industry professional processing the valve stem of the patented invention technology, the company now has access to the national stem 10 patents, at present this technology has been applied in the field of all valve industry and the following images accompanied by chairman of the board of directors of the company customers in the workshop. And a group photo with leave
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