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VENTECH is mainly engaged in the development, production, processing, and sales of CNC duct and HVAC grille production machines. Contact Us - Tel : +86 757 29200196 Mobile : +86-189 27789653 E-mail : machine@chinaventech.com Address : No. 3, Hongcha Road, Yinghong Industrial Zone, Yingde, 513042, Qingyuan, Guangdong, China