The Government of Ukraine approved the lists of goods whose export and import are subject to licensing, as well as quotas for 2023. Some goods have zero quotas (export prohibition). This is stated in Resolution № 1466 of December 27, 2022. According to the document zero quotas are defined for goods:

• salt suitable for human consumption;
• hard coal, anthracite; briquettes;
• liquid fuel (fuel oil);
• natural gas (of Ukrainian origin);
• fuel timber;
• silver;
• gold;
• by-products or scrap of precious metals.

Reference source: https://bit.ly/3WCBsyk