By the end of screen printing, you should carefully check and retouching your mind and remove dirt track site of electroplating, siningensis to be innovativeink all, or else can only be galvanised, unnecessary scrap.
Pipelinerepairrate increases, reducingthenumberofscraptubingfor the oil to reduceunnecessaryeconomicloss, directlyimprovingthe economic benefits of the oilfield.