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At Esprit Electronics, we help OEMs understand the key factors to consider when selecting the right Contract Electronics Manufacturing (CEM) partner. In today’s competitive market, making the right choice can significantly impact product quality, lead times, cost-efficiency, and business growth.

With many CEMs operating across the UK, it’s crucial to take a strategic approach to shortlisting potential partners. Below is a comprehensive list of essential considerations:

Technology & Capabilities
Not all CEMs offer the same range of services or possess expertise across every sector. Many specialise in particular technologies, market segments or assembly techniques. When evaluating a potential partner, consider whether they have the technical know-how to meet your current needs and support future developments. Choose a partner that is forward-thinking and adaptable—one that can grow alongside your business. For example, if conformal coating or advanced test capabilities are a requirement, ensure your chosen provider has these capabilities in-house. A lack of essential services could cause costly supply chain fragmentation later down the line.

Certifications & Accreditations
If your product needs to comply with industry-specific standards—such as ISO 9001, ISO 13485 (medical), or IPC standards—these must be verified early in the selection process. Document the mandatory certifications your products require and only consider CEMs that can demonstrate current, valid compliance. Audits and quality inspections should be welcomed by your chosen partner, not avoided.

Logistics, Inventory & Supply Chain Management
The best CEMs offer end-to-end logistics, from component sourcing and inventory management to final delivery of assembled products. This reduces administrative overhead for OEMs and helps streamline production timelines. Some providers will expect you to manage material supply or deliver components on a free-issue basis, which can increase operational complexity. A CEM that can manage procurement, forecast stock, and offer buffer inventory when needed is a valuable strategic asset—especially during times of supply chain disruption.

Right-Sized Partnership
It’s important to match your business size to that of your CEM. Ideally, you don’t want to represent more than 20% of your CEM’s turnover. Exceeding this can make you overly critical to their operations, increasing risk for both parties. Conversely, if you represent too small a share, you may struggle to secure the attention and service levels you need. Aim for a balanced relationship where you’re important—but not overly dominant—in your CEM’s portfolio.

Commitment to Investment
Electronics manufacturing is a rapidly evolving field. Look for a CEM that continually invests in new equipment, staff training, automation technologies, and process improvements. A proactive investment strategy shows long-term commitment to quality, efficiency, and competitiveness—and it means your product will benefit from the latest advancements

Stability & Reputation
Trust is earned over time. Choose a CEM that is financially stable, profitable, and shows a pattern of sustainable growth. Longevity in the market is another strong indicator of reliability. Ask potential partners about their ownership structure, succession plans, and future investment roadmap to gauge long-term security. Don’t hesitate to request references, conduct credit checks, or review annual reports if applicable.

Engineering & Technical Support
A strong technical team can transform a good CEM into a great one. Beyond simply building to print, your CEM should be able to advise on design for manufacture (DFM), component substitutions, cost-saving opportunities, and more. Especially in today’s challenging global supply chain environment, having a partner who brings technical solutions—not just problems—is invaluable. Case studies, testimonials, and industry recognition are useful ways to assess a CEM’s technical problem-solving track record.

Cultural Fit & Partnership Approach
Your CEM should be more than just a supplier—they should be a trusted extension of your own business. The best partnerships are built on clear communication, aligned goals, and mutual respect. Look for responsiveness, flexibility, and a customer-focused approach. This is especially important when dealing with urgent requests, last-minute changes, or tight deadlines.

Word-of-Mouth & Recommendations
Finally, don’t underestimate the value of peer feedback. Speak to colleagues in your industry, attend networking events, or engage with industry bodies to gather referrals. A recommendation from someone with first-hand experience can save time and steer you towards a trusted partner.

Choosing Esprit Electronics
At Esprit Electronics, we understand that choosing the right CEM is a critical decision. With decades of experience, a comprehensive range of in-house capabilities, and a track record of long-term partnerships, we’re proud to be the CEM of choice for many leading OEMs across the UK. Whether you’re looking for a full-service provider or a specialist to support a specific project, we’re here to help your business thrive.

Learn more at: www.espritelectronics.com

Contact Russell Otter / russello@espritelectronics.com for a free quotation today!