加强质量管理促进推广应用努力开创塑料管产业新局面 --"全国聚乙烯、共聚聚丙烯管推广应用研讨会"会议总结
가강질량관리촉진추엄응용노력개창소료관산업신국면 --"전국취을희、공취취병희관추엄응용연토회"회의총결
Enhance Quality Management,Promote Popularization and Do the Best to Open Up A New Prospect for Plastic Pipe Industry