Manila, Jan. 15 -- The city government aims to boost the marketing of local products and strengthen partnership with sister cities by holding shows and expositions this year. Lemuel Ortonio, Davao City Investment and Promotion Center (DCIPC) chief, on Monday said the joint expositions are currently under negotiations with sister cities. "We would want to have a meaningful exchange between our sister cities and not just on paper," Ortonio said, adding that Davao City has eight local and eight international sister cities. Ortonio said sister cities want to go beyond the symbolic partnership by initiating activities that spur economic activities between and among them. Under the proposed concept, he said each city will showcase tourism product...