产品用在建筑施工，道路施工等场合。起警示作用。
安全围栏成型工艺有三种，相应的有三种成型机组。
There are 3 kinds of molding technology for safety fence, corresponding with 3 kinds of forming units
第一种，冲孔拉伸工艺。安全围栏是高分子聚合物通过挤出、成板、冲孔过程后再纵向拉伸而成。
The first one: holes punching and stretching technology. The safety fence which is made of macromolecule polymer is molded through extrusion, sheet forming, holes punching, and longitudinal stretching.
第二种，旋转式机头成型工艺。安全围栏是高分子聚合物通过旋转式机头直接挤出成型的
The second one: rotary die head technology. The safety fence which is made of macromolecule polymer is molded by extruding from the rotary die head directly.
第三种，往复式机头成型工艺。安全围栏是高分子聚合物通过往复式机头直接挤出成型的。
The third one: reciprocating die head technology. The safety fence which is made of macromolecule polymer is molded by extruding from the reciprocating die head directly.
