You will save a tremendous amount of money. The more labor there is in the part cost, the more money you will save. Through common language, customs and culture, they will have a more complete understanding of your requirements.
Relationships are everything.
Our staff have spent years living in the Far East, Eastern Europe, and South America, and have well established contacts. Insist on price quotations that include delivery to your door. Make sure that the quality requirements are clear. Even though many sources are ISO 9000 certified, you need a specific Quality Control checking procedure for every item purchased. A Quality Control report must be sent prior to every shipment.