Directory:
1. Construction of the basic model
2. Comprehensive collision verification of pipeline design
3. Comprehensive deepening design and drawing of pipelines
4. Comprehensive layout planning of mechanical and electrical installation engineering pipelines
5. Submit the as-built model drawing
Comprehensive layout planning and detailed design of mechanical and electrical pipelines 
Comprehensive layout planning and detailed design of mechanical and electrical pipelines Comprehensive layout planning and detailed design of mechanical and electrical pipelines Comprehensive layout planning and detailed design of mechanical and electrical pipelines Comprehensive layout planning and detailed design of mechanical and electrical pipelines Comprehensive layout planning and detailed design of mechanical and electrical pipelines Comprehensive layout planning and detailed design of mechanical and electrical pipelines Comprehensive layout planning and detailed design of mechanical and electrical pipelines Comprehensive layout planning and detailed design of mechanical and electrical pipelines Comprehensive layout planning and detailed design of mechanical and electrical pipelines Comprehensive layout planning and detailed design of mechanical and electrical pipelines Comprehensive layout planning and detailed design of mechanical and electrical pipelines Comprehensive layout planning and detailed design of mechanical and electrical pipelines Comprehensive layout planning and detailed design of mechanical and electrical pipelines Comprehensive layout planning and detailed design of mechanical and electrical pipelines Comprehensive layout planning and detailed design of mechanical and electrical pipelines Comprehensive layout planning and detailed design of mechanical and electrical pipelines Comprehensive layout planning and detailed design of mechanical and electrical pipelines Comprehensive layout planning and detailed design of mechanical and electrical pipelines Comprehensive layout planning and detailed design of mechanical and electrical pipelines Comprehensive layout planning and detailed design of mechanical and electrical pipelines Comprehensive layout planning and detailed design of mechanical and electrical pipelines Comprehensive layout planning and detailed design of mechanical and electrical pipelines Comprehensive layout planning and detailed design of mechanical and electrical pipelines Comprehensive layout planning and detailed design of mechanical and electrical pipelines Comprehensive layout planning and detailed design of mechanical and electrical pipelines Comprehensive layout planning and detailed design of mechanical and electrical pipelines Comprehensive layout planning and detailed design of mechanical and electrical pipelines Comprehensive layout planning and detailed design of mechanical and electrical pipelines Comprehensive layout planning and detailed design of mechanical and electrical pipelines Comprehensive layout planning and detailed design of mechanical and electrical pipelines Comprehensive layout planning and detailed design of mechanical and electrical pipelines Comprehensive layout planning and detailed design of mechanical and electrical pipelines Comprehensive layout planning and detailed design of mechanical and electrical pipelines Comprehensive layout planning and detailed design of mechanical and electrical pipelines Comprehensive layout planning and detailed design of mechanical and electrical pipelines 
