The Secretary for Development, Mr Paul Chan (left), is briefed on the operation of the Spectrometer during the visit to the Ma Wan Solar Tower today (April 14).

The Secretary for Development, Mr Paul Chan (left), is briefed on the operation of the Spectrometer during the visit to the Ma Wan Solar Tower today (April 14).

The Secretary for Development, Mr Paul Chan (left), is briefed on the operation of the Spectrometer during the visit to the Ma Wan Solar Tower today (April 14).