国产成人欧美一区二区三区一色天_久久成人一区二区_a在线视频_在线一区二区三区_在线视频亚洲_欧美日韩一区二区三区不卡视频

Rectification of dust removal pipeline in a certain day owned plastic factory in Shenzhen

Renovation content: The on-site dust removal pipeline is a square pipeline, and the dust removal equipment is not made according to the requirementsexplosion-proofThe renovation project involves changing the dust removal pipeline to a circular pipeline and treating the dust removal equipment according to explosion-proof standards.