After sales service technical support: +86 13811065752(Zhanggong, Beijing Tianjin Hebei region)

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                                                      +86 13811065670 (Honggong, Jiangsu Office) +86 13811065997 (Kong Gong, Jiangsu Office)

                                                      +86 13811065903 (Wanggong, Chongqing, Sichuan) +86 13811065903(Fenggong of Zhejiang Office)

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