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In 2010, Mr. Wu Yamin, normal supervisor of Xi’an Yongxing Era & Building Co., Ltd visited the “oil town”-Huston in United States and Calgary in Canada to do the marketplace survey of well-logging device in North The usa.

In 2010, Mr. Wu Yamin, general manager of Xi’an Yongxing Technology & Development Co., Ltd visited the “oil city”-Huston in United States and Calgary in Canada to do the market survey of well-logging instrument in North America.