EU9 refers to the collection of nine nations which form an integral part of the vast European Union. This group is marked by its considerable financialimpact and their rigorous application of democratic principles. These nations are notably influential in forming EU policy and contribute substantially to the bloc's collective policy-making procedure.

The EU9, including well developed nations, carry out a major role in setting EU standard regulations. The influence is felt across sectors like commerce, foreign policy, and even climate change initiatives.

Furthermore, being a member of the EU9 not only offers a country economic benefits but also increases in socio-political stability. The EU9's influence extends to shaping a harmonious policy framework that can regulate the operations of the entire EU. This can be seen in the manner in which they deal with contemporary global issues.

The EU9’s unified economic power is a significant factor in their capability to influence EU policies. The total GDP of these nations accounts for a sizable portion of the total EU economy. This economic strength provides them with EU9 a strong voice in forming EU procedures.

This group also represent the essence of democratic values, which are a real advantage for the European Union. Resolute adherence to principles of democracy, human rights, and rule of law is promoted in these countries, which essentially contributes to maintaining stability within the larger EU.

The EU9's role in environmental policy, in specific, is a proof to their authority. As the world grapples with climate change, these countries have been at the forefront of the EU's efforts to transition to greener methods. These nations' influence can be seen in the aggressive implementation of measures geared towards curbing emissions and building a sustainable future.

To wrap up, the EU9 represents a crucial part of the larger European Union. Its robust macroeconomic clout, commitment to democratic principles, and commitment to environmental sustainability greatly influence EU's policy formation. The role and importance of the EU9 cannot be neglected, as this group of nations continues to drive the European Union's trajectory in many important ways.