The Members of Ostrov apply the following sustainable practices:

• They do not use chemical pesticides.
• They recycling organic waste.
• They use naturally occurring pest replant that are non-toxic.
• Are familiar that the new innovative techniques can also accelerate the process of reducing dependency on pesticides.
• They use quality seeds for plant varieties.
• Tackling food loss and waste, recovery of nutrients and secondary raw materials.
• They respect the rules of the animal welfare according to the EU Regulations.
• They do not use antimicrobials for farmed animals.

The creation of a horizontal cluster of businesses operating in the same stage of the supply chain is a circular economy practice, as it allows the same inputs to be used by more operators. The member of Ostrov:

• Use of an accredited laboratory of analyses.
• Promotional programs.
• R&D Programs.
• Shared use of data and information

PGI Terasele Dunării also known as "Wines of the Danube Terraces," is a Protected Geographical Indication designation for wines produced in Romania. Terasele Dunării refers to the terraced vineyards located along the Danube River in Romania.

The PGI Terasele Dunării designation ensures that the wines are made from grapes grown within the defined geographical boundaries of the Danube Terraces region. It guarantees that the grapes used in the production of these wines come from vineyards located along the terraces of the Danube River and adhere to specific cultivation practices and quality standards.

The wines produced under the PGI Terasele Dunării designation can include a variety of grape varieties, both red and white. Some of the popular grape varieties used in these wines include Fetească Neagră (black maiden), Merlot, Cabernet Sauvignon, Pinot Noir, Chardonnay, Sauvignon Blanc, and Riesling, among others.

These wines are known for their unique character and expression of the Danube Terraces terroir. The region's soil composition, climate, and proximity to the Danube River contribute to the distinct flavors and aromas found in the wines.