支撐空調(diào)管道墊木 規(guī)格 DN20*30*30mm DN25*30*30mm DN32*30*30mm DN40*30*30mm DN50*30*30mm DN65*30*30mm DN80*30*30mm DN100*30*30mm DN125*30*30mm DN150*30*30mm DN200*30*30mm DN250*3