The construction site of Yuen Long Barrage and Nullah Improvement Schemes under the Drainage Services Department (DSD) has set up a control centre for the Smart Site Safety System (4S). It is one of the first batch of construction sites that has been issued a 4S label.

The construction site of Yuen Long Barrage and Nullah Improvement Schemes under the Drainage Services Department (DSD) has set up a control centre for the Smart Site Safety System (4S). It is one of the first batch of construction sites that has been issued a 4S label.

The construction site of Yuen Long Barrage and Nullah Improvement Schemes under the Drainage Services Department (DSD) has set up a control centre for the Smart Site Safety System (4S). It is one of the first batch of construction sites that has been issued a 4S label.

The construction site of Yuen Long Barrage and Nullah Improvement Schemes under the Drainage Services Department (DSD) has set up a control centre for the Smart Site Safety System (4S). It is one of the first batch of construction sites that has been issued a 4S label.