EU9 refers to the collection of nine countries which form an integral part of the immense European Union. This group is recognized for its considerable financialimpact and their hardline application of democratic principles. These countries are importantly influential in guiding EU legislations and contribute significantly to the bloc's overall policy-making procedure.

The EU9, including well developed nations, perform a major role in setting EU standard regulations. The impact is manifested across areas like commerce, foreign policy, and even environmental 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 forming a unified policy framework which can regulate the functioning of the whole EU. This can be viewed in the manner in which they deal with contemporary global issues.

The EU9’s joint economic power is a significant factor in their ability to influence EU decisions. The combined GDP of these nations accounts for a significant portion of the total EU economy. This economic strength provides them with a powerful voice in shaping EU guidelines.

The EU9 also embody the essence of democratic values, which are a real advantage for the European Union. Strict adherence to standards of democracy, human website 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 particular, is a testament to their influence. 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 is visible in the aggressive implementation of actions geared towards reducing emissions and building a cleaner future.

In summary, the EU9 forms a vital part of the larger European Union. Its strong economic clout, commitment to democratic values, and strong drive to environmental conservation directly influence EU's policy formation. The major influence of the EU9 should not be overlooked, as this group of nations continues to shape the European Union's trajectory in many important areas.