The government will begin the second phase of the trial single-use plastic ban within one to two months, according to the environment minister Tse Chin-wan.

It covers takeaway plastic cups and food containers.

Speaking on a Commercial Radio programme, Tse said the government would soon invite eateries to test out suitable replacement products during the trial.

"For now, there are more than 100 different kinds of replacement. We'll try and see which ones are suitable and user-friendly. During the trial, we will also pass the products back to the suppliers for them to improve," he said.

"If the products are suitable, we will promote using them first. But for those that are not ready for use, we can offer feedback to the suppliers and see how they can improve."

Tse said during the initial 12 months of the ban's first phase - covering takeaway utensils - there were 159 complaints with 17 percent leading to fixed penalty notices.

Separately, this month the government introduced national security clauses in licences for premises that include food and entertainment venues.

These licences can be revoked if permit holders, or other related persons, engage in acts that endanger, or are contrary to, national security.

Tse said by doing so, the government hopes that those checking premises, as well as premises operators, will understand that they are responsible for safeguarding national security.

He added there will be an appeal system for premises that have their licences withdrawn.