A good match between companies must exist for the partnership to succeed.  Some questions to ask while selecting an electronics partner are:

• Is the company capable of manufacturing my product? 
• Is my product like other products already manufactured at the company?
• Does the company have the necessary quality certifications for my product? 
• What is their historical quality record?
• Does the company have a good on-time delivery record? 
• Do they measure on-time delivery against my request or their own acknowledge date?
• Is there a good cultural fit between companies?
• Do we agree on expectations for quality, delivery, communication and engineering control?
• Is the company in good financial health?