EN10305-4：2003液压钢管 东莞市德标钢管有限公司

p1Src=//y3.yzimgs.com/uploads/312990/2018124-93457921.jpg?watermark/2/text/5Lic6I6e5biC5b635qCH6ZKi566h5pyJ6ZmQ5YWs5Y-4/font/5a6L5L2T/fontsize/650/fill/I0E3QTlBOA==/gravity/SouthEast"

aa