论文部分内容阅读
据业内人士分析,国内近几年PVC管材产量大幅增加,各种热水管材尚不具备大量使用条件,上项目需慎重.
According to analysis by industry insiders, the domestic production of PVC pipes has increased substantially in recent years, and various hot water pipes do not yet have a large number of conditions for use. The project needs to be prudent.