According to MPA's regulations in China, Non-China flag sea-going vessels must have to discharge sludge prior to leave China, unless the sludge quantity is less than 10 cubic meters.

l Before sludge discharging, our experienced surveyors visually check and gauge sludge in vessel’s sludge tanks to deter illegal activities during slugging discharging.

l Sludge samples taken and distributions.

l Sludge quantity calculations and survey report issued.