Address: 16 Yulan Street,High-tech Industrial Development Zone, Zhengzhou, China | 86 15538189155 | [email protected] | www.focoinduction.com | Since 2003, FOCO Induction has been the leader in surface hardening of machine guide rails and concrete pipe machinery. With 22 years of mastery, we provide specialized equipment for the inner wall hardening of concrete pump ... http://www.focoinduction.com