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headquarters: Co first (Beijing) biotechnology co. LTD.; Address: building 4, yard 1, wuliqiao 2nd street, chaoyang district, Beijing

Production base: Shijiazhuang ke is first feed technology co. LTD.; Address: no. 39, hainan road, shijiazhuang economic and technological development zone, hebei province.

Production base: Hebei branch first biotechnology co. LTD.; Address: wuqiang county, hengshui city, hebei province.

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Technical support: Seven star network