DIGS
Surveying; Geological surveys and research; Testing and research in civil engineering; Survey and investigation of civil engineering, namely, of roads and runway pavement structures; Survey and investigation of civil engineering internal structures, namely, of road tunnels, water tunnels, and embankments, and analysis of survey results and investigation results; Survey and investigation of civil engineering, namely, of caverns, underground waterways, buried objects, and other underground civi...
Pending · November 28, 2025 · 99519879 ·