For enquiries, please contact the Rough Diamonds and Ozone Depleting Substances Licensing Unit of the Department at tel. no. 2398 5557*.
* All telephone conversations on the enquiry hotlines of the Trade and Industry Department shall be recorded to ensure service quality. The recorded conversations will be kept for 90 days. Members of the public may request for conversations relevant to them recorded in 90 days on a CD, at a charge of $50 per CD.