"The Spotlight is always on Quality"


What We Do

About Us


QEMS Business Philosophy

 The Seven Principles 



Quality Electronic Manufacturing Services, Inc. (QEMS) was incorporated in Charlotte, NC in January 2002 by a partnership of investors and seasoned engineers with a long history of working together in the manufacture of printed circuit board assemblies, cable assemblies, and electronic systems. QEMS’ experience has included PCB design, Quality Systems (ISO9000, QS9000),Interconnect Standards (IPC610), purchasing, SMT, MRP, and a full range of technologies and techniques essential to success in the Electronic Manufacturing business.


QEMS is aware that Electronic Business is constantly changing and we are committed to identifying and utilizing the technologies and capital equipment best suited to the demands of the future while employing the best of what the past has taught us. For the customer, this means that to the traditional offering of consignment EMS, QEMS can provide Technical Design Manufacturing Services, such as Design for Manufacturing. 

Waste Reduction

We at QEMS, Inc. are extremely interested in developing long term relationships with top flight companies and we believe we can offer very aggressive pricing on through hole or SMT printed circuit assemblies in any quantity range from prototypes to medium volume runs. We are also equipped to produce a wide variety of cable assemblies / cable harnesses and have the capability to perform pc board rework / repair services for your operation.




The expertise and experience of the Senior Partners is supplemented by a staff experienced in Purchasing, Test, Assembly, and Quality Systems. The result is a company whose collective experience enables it to serve customers with the knowledge of a more established company while maintaining an entrepreneurial approach to creative solutions. We can offer a highly experienced workforce capable of producing the highest quality products.

Our Teams

“We will always strive to exceed our customers’ expectations by continually improving performance in product quality. delivery, and cost.” 

Phuong Nguyen- CEO QEMS Inc.

Our Facility

Our Service

Our goal is to produce and deliver products and services our customers will want to brag about and make them proud to be our partners. We are confident that we can achieve this goal by accomplishing the following:


100% On-Time Delivery Performance


100% Compliance to Customer Product Specifications

Waste Reduction

Continual Reductions in Scrap, Waste, and Process Variation


Design Services

In the assembly of your pcb/boards and in the integration of your systems, we offer you a whole variety of state-of-the-art technologies and established processes.

Design for Manufacturing (TDMS)

The design stage is very important in product design. Most of the product lifecycle costs are committed at design stage. The product design is not just based on good design, but it should be possible to produce by manufacturing as well.

Turnkey and Consignment Manufacturing

Oftentimes as customers are prototyping circuit boards, they choose to procure the material and provide it to their supplier. 

Printed Circuit Board Assembly

What makes QEMS different is our deep technical expertise and dedication to quality and customer service. We’re confident that our customers will receive top customer service and the best quality products.

Through Hole and Surface Mount Technologies

As technology grows, the demand for less weight and smaller size component increases. This leads to new improved technology known as surface mount technology (SMT). Surface mount components are similar to plated through hole as far as their electrical function is concerned, but the key difference is size.

Fine Pitch, uBGA, CSP, 01005 Component Placement

Up-to-date automated cell assembly equipment for fine pitch, mixed, single-double sided, lead and lead free assemblies. These machines are capable of handling passive packages up to 0201 with expansion capabilities up to 01005 package sizes. Active component packages will include BGA, uBGA, CSP and MCM.

Automated Optical Inspection

The need for automated inspection exists in all PCB assembly processes where high quality and safety standards apply. What is needed is a reliable AOI system that provides maximum inspection coverage and measured feedback to the process.

Functional Testing

The functional test is typically performed in the last phase of the production line of a product as a final quality control. FCT are performed to ensure that the device under test (DUT) fulfills its functional specifications.

Flex Circuit SMT Assembly

Flexible Circuits require special handling and processing beyond what is normal best practices for rigid PCB Printed Circuit Board assembly. By definition, flexible circuits are flexible and made of different materials that react differently to heat and moisture.

Printed Circuit Board Repair Service

Whether you need help with a thousand circuit boards or just a few, we can complete the job and get your PCBs back to you for a charge that’s generally just a fraction of the circuit board’s value.

Epoxy - Potting

Electrical potting compounds are based on one and two-component epoxy resin and two-component polyurethane resin chemistries. They are solvent-free liquids, 100 percent solids formulated epoxy resin and polyurethane resin compounds.

Conformal Coating

Conformal coating is a protective chemical coating or polymer film 25-75µm thick (50µm typical) that ‘conforms’ to the circuit board topology. Its purpose is to protect electronic circuits from harsh environments that may contain moisture and or chemical contaminants.

Cable - Wire Harness Assembly

Our experienced staff puts a wealth of cross-industry knowledge into every wire harness and cable assembly solution. For one customer, our engineers realized time and money savings by utilizing a communications connector for an aftermarket automotive application. This type of value-added solution for wire harness assembly and custom cable assemblies is commonplace among our design engineering team, which we’re proud to provide, along with a highly capable production team.

Box Build

Profit from our broad know-how in box build and system assembly. Let us take care of the completion and assembly of fully integrated electronic systems, including tailor-made test design and professional test execution. Challenge us with the handling and testing of assemblies in different versions; we have the necessary experience. Your benefit: clear responsibilities, reduced organizational expenses and lower total costs.


QEMS: Gold Sponsor for Union County COC Red Carpet Gala 2016

QEMS, Inc. was a Gold Sponsor for the 2016 Union County Chamber of Commerce Red Carpet Gala. Members of the Executive, Human Resources, Sales, and Quality teams came to proudly represent our company at the event and had a wonderful time. This annual gala, always held the first Thursday in December, is the annual premiere event for the whole of

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QEMS Celebrates Thanksgiving 2016 and End of Year Birthdays

2016 was an incredible year for QEMS and, looking back, we have a lot to be thankful for. As we approach the holiday season (and even more exciting news with our company’s 15th Anniversary right around the corner), Executive Management and the Corporate Event Team wanted to take an opportunity to look back with the whole team and show

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QEMS Celebrates 2016 October Birthdays

QEMS hosts a monthly birthday event to treat employees celebrating a birthday within the calendar month. In October, the event was hosted on site and catered by Hickory Tavern. Take a look at our gallery and see for yourself how much fun we have as a group!

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Career Opportunities

QEMS Inc – Applications


1.  Download the following documents by clicking on the blue buttons.


2.  Scan and send completed documents to this email address: HR@qemsinc.com


Interview Non Disclosure Agreement   Application for Employment

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