The 7 steps to selecting a new EMS partner

There are many reasons why an Original Equipment Manufacturer (OEM) might choose to outsource part or all of their manufacturing operations.

Perhaps there’s been a change in company ownership that’s resulted in a shift in priorities or a drive to cut costs?  Maybe your sales are rocketing and your in-house capabilities are at full capacity? Or perhaps you simply want more time to focus your attention on other aspects of your business?  

Whatever your reasons for choosing to outsource, it’s important to understand that any change in process takes time and requires careful consideration.

In this blog post we explore 7 key steps that will guide you through the process of identifying, shortlisting, auditing and selecting your Electronics Manufacturing Services (EMS) Partner.

Download our 10 step guide to outsourcing your electronics manufacturing

1. Assemble your team

The first step in the process will be to put together a team of experts who will take responsibility for steering the project.  Ideally aim for as wide a range of skills as you possibly can - inviting input from engineering, procurement, quality and manufacturing.  

You’ll want to assign a project leader who can create the plan and see the project through from start to finish.  Involving HR can also be hugely valuable, and especially if your proposed outsourcing strategy is likely to result in changing roles or changes to staff numbers.

Depending on the sensitivity of your project, it may also be worth getting the members of the team to sign a non-disclosure agreement to ensure complete confidentiality.

2. Set your objectives

It’s crucial to set clear goals before you begin the process of shortlisting candidates.  Are you looking to transfer just one part of your operation for example? Or are you considering a complete, end-to-end, outsourcing partnership?

Reaching a final decision on the right supplier can take time, so it’s important to remain mindful of your original objectives throughout the process and to create specific, achievable and measurable milestones so you can plot your progress.

You may also find it helpful to begin drafting your Terms and Conditions (T&Cs) at this early stage so you can establish and define the criteria for your potential suppliers.

3. Start your search

Your search for an EMS provider might initially start with a longlist of 10 or so candidates - but ideally you'll want to narrow this down to the three or four that you think could offer the best potential fit for your business.

While online research can be helpful, it can also be hugely time-consuming as you whittle your way through the options. If in doubt, you may well find that the tried-and-tested method of recommendation or word of mouth is useful for helping to identify your prospects.

Throughout this initial search stage it can be useful to keep a few clear objectives in mind. Perhaps you’re after an EMS partner that is located near to your own operation? Or maybe you’d prefer a supplier who has multiple locations throughout the UK or that has manufacturing facilities abroad?  

4. Quiz your candidates

A pre-qualifying questionnaire can be an invaluable next step in helping you determine the potential fit between you and your prospective EMS partner and to reduce your shortlist down to a final two or three contenders.

Their commitment to the business relationship is going to be key. Look for signs that they’re genuinely interested in you and your business and that they can demonstrate that they have the skills and experience to manage the manufacture of your products.

5. Plan a site visit

Once you’ve established your final shortlist, a next logical step will be to arrange a tour of your prospects’ manufacturing facilities.

Taking the opportunity to see the business first-hand can provide a vital first impression of the company and its culture.  

It's also a chance to put faces to names, to quiz them further about their capabilities and to confirm that the people you’re talking to are the actual decision-makers who will be steering your project from start to finish.

6. Submit your RFQ

Your Request for Quotation (RFQ) will provide your supplier with all the key commercial and technical information that they’ll need to provide you with an accurate quote.  

From a commercial standpoint it’s likely to include estimated annual usage figures for your products, an indication of quantities and the likely frequency of orders.  

From a technical perspective you’re likely to need to provide a significant amount of data including a Bill of Materials (BOM), parts drawings, production build packs and manufacturing/test data.

7. Audit their operations

An audit of your prospective EMS partner’s operations will likely involve several elements.  During the site audit you’ll be able to talk to the key people who will be responsible for the manufacture of your product.  

It’s also valuable to carry out a quality audit of their processes and procedures to ensure they have a visible structure in place and that they can demonstrate the secure and efficient management of your build data.  If your sales tend to be seasonal or are subject to peaks in activity then you’ll also want to ensure that they can cope with the unexpected.

Once you’ve completed all your quality checks and have received all the information back from the RFQs the final stage in your selection process will be to reconvene your team, weigh up the pros and cons of each candidate and make your final decision.


Choosing to outsource your electronics manufacturing to an EMS provider requires careful planning and consideration. And even once you’ve made your decision there may still be things that test you or that don’t go quite to plan.  

An experienced EMS partner has been there before. They understand the challenges and they’ll be able to support you through the process to ensure you achieve the goals that you’re after.

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Written by Neil Sharp

Neil has over 25 years’ experience in Electronics Manufacturing Services and Component Distribution. During his career, Neil has held a range of leadership positions in sales, marketing, and customer service. Neil is currently part of the ESCATEC Senior Management Team and is responsible for setting and delivering the overall Group Marketing strategy. Neil heads up the marketing department and is responsible for both the strategy and the implementation of innovative marketing campaigns designed to deliver high quality content to those seeking outsourcing solutions.