Zhong Cheng Hua Yu (Beijing) Mining Technology Co. Ltd. Officers presented their company profile  and an environment friendly technology to recover gold and copper to the Board of Investment of Davao City headed by Mr. Gil M. Dureza and OIC, Office of the Regional Director Atty. Wilfredo G. Moncano at the Conference Room of the Davao City Investment Promotion Center on August 25, 2016. The purpose of their visit is for a possible investment in recovery of valuable metals in abandoned and existing mining tailings,  pyro processing of nickel ores and mine waste water treatment technology.