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Yantai Yunsheng Petroleum Machine Accessories Co. since founded in 1997 has been specializing in manufacturing sucker rod coupling, and we have passed ISO9001:2000 and API Spec 11B certification. Moreover, as we are the directly professional manufacturer of API sucker rod coupling, we have enough room to make competitive and discount price for our customer, and our sucker rod coupling are available in all types and sizes and enjoy good reputation all the time.
商铺网址：http://sdytyunsheng.cn.vooec.com |
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