The CEO of one of the companies, invited by the government to meet the media and introduce their alternatives to plastic disposable tableware, says a period of trial and error is still needed.

Speaking on RTHK's Hong Kong Today programme, George Chen of Ecoinno said not all plastics had the same attributes when it came to heat, strength and storage and it was the same for their environmentally-friendly alternatives.

"This is a point I would like to share. We all know humans have been using plastics for the last 30 years, 40 years - we have all experience," he said. "Different plastics are made for different purposes. For example, a plastic container for sandwiches is not the same formulation as a plastic container for oil or soup."

Chen said that with the introduction of new plant-fibre containers and cutlery, consumers and users needed to focus on what alternative products met their needs rather than just focusing on price.

On Thursday, the Environmental Protection Department put on the media event as it launched the Green Tableware Platform to help people and businesses find alternatives to plastic utensils. The online platform provides a list of suppliers for the environmentally-friendly products.

The first phase of the plastic cutlery ban began on Monday, and restaurants are now banned from giving out plastic utensils, but plastic containers are still allowed for takeaways.

The second phase of the ban is expected to begin in 2025, when plastic containers will also be banned for takeaways.