The production line adopts high efficiency extruder, swift net changer and screw plastic blowing head.
生产线采用高效挤出机，快速换网，螺旋吹塑机头。
2
Compared with pair trawling, it increases the single netproduction for 40 to 45 per cent and lowers the cost and decreases the Labour intensity. It improves the economic efficiency.
经一年来生产试验证明产量增加明显，与同马力双船拖网相比，平均单船网产增加40 ~ 45%。
3
The net-shape forging is an advanced technology . It may not only lift material utilization from 40% to 70%, but also lift the gear strength over 20% and productionefficiency over 40%.