2016 was an unusual and most controversial year, and the PCB industry was even more miserable. During July-December 2016, CCL rose 101%, electrolytic copper foil rose 60%, PP sheet rose 38%, phosphor copper balls rose 30%, lead-free tin balls rose 25%, and carton boxes rose 30%, and the original monthly settlement of 90 days became a full prepayment. It also restricted purchases. The quotation changes one day a day. We ca n’t change the market changes. Try our best to maintain new and old customers to the greatest extent.