document.writeln('

              对丝

00

                                   通

00

                              通用型

00

                                    

00

内螺纹直通 BPCF 12-04

00

  普通圆二通接头

00

                                  自

00

塑钢 圆三通

00

            T侧三通 BPD 4-02

00

');