精品国产免费久久久久久,99视频九九精品视频在线观看,免费的视频网站入口,久久国内,福利视频亚洲,h小视频在线观看网

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.