德固特：取得階梯式螺旋折流板空氣預(yù)熱器專利證書

array(1) { [419668]=> array(2) { [2]=> array(2) { [0]=> string(9) "德固特" [1]=> string(9) "預(yù)熱器" } [4]=> array(1) { [0]=> string(19) "同花順7x24快訊" } } }