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zhougong.com.cn yiying intelligent technology (ningbo yongyuan intelligent instrument) co., ltd. is a domestic manufacturer specializing in the production of yiying intelligent technology (ningbo yongyuan intelligent instrument) co., ltd., yongyuan water meter and yongyuan instrument. yiying intelligent technology (ningbo yongyuan intelligent instrument) co., ltd., yongyuan water meters and yongyuan instruments produced by the company are of high quality and low price, and are sold to many countries and regions. 2025-01-26