Guangdong Certain River-Crossing Pipeline Marker Renewal, Renovation and Installation Project

Guangzhou Urban Area River-Crossing Pipeline Marker Renewal, Renovation and Installation Project

Guangdong Urban Area River-Crossing Pipeline Marker Renewal, Renovation and Installation Project

Guangdong Zhuhai Certain Bridge Navigation Aid Installation Project

Guangzhou Certain Bridge Navigable Height Clearance Display Maintenance Project

Guangdong Meizhou Certain Bridge Anti-Collision Project

Guangdong Certain Bridge Water Gauge Installation Project

Guangdong Certain Bridge Anti-Collision Project

Guangdong Beijiang Certain Bridge Anti-Collision Reinforcement Facility Project

AtoN Informatization Maintenance Service

Guangdong Certain Fishery AtoN Informatization Project