• Qualitätskontrolle einer nach IPC 610 Klasse 3 bestückten Leiterplatte


What you can rely on

All our factories are certified according to DIN ISO-9001:2015. Our operational and production processes comply with these important industry and safety standards. We also comply with European Union RoHS/WEEE standards and follow ATEX directives for oil and mining products.

For customers in the automotive and aviation fields, we maintain standard processes for non-RoHS manufacturing. Having the option of manufacturing in both RoHS and non-RoHS settings allows us the flexibility to service the widest range of industries.

In the electronics industry, accuracy and reliability are everything. Our fully automated organizational system manages tens of thousands of individual components and ensures that each piece is assembled accurately. Over the years, we have developed extensive in-house quality assurance testing protocols that are carried out after each stage of the production process. At your request, we can also perform AOI tests, BGA inspections, high-voltage and function tests. With our X-ray equipment, we also have the possibility to look under BGA components or ground planes.

Our involvement in the medical and automotive industries has also given us experience in adapting our manufacturing processes to comply with the demands of individual project or industry-specific quality standards. Depending on your project or industry, we will meet and exceed the quality specifications you require.

Frequent customer and company audits verify our uncompromising commitment to quality.

Customer Focus

Our understanding of quality is not limited to the successful delivery of finished products. It extends to the fulfillment of our customer's current requirements and the anticipation of their future needs. In addition to our production and quality-management processes, we also see reliability and timely delivery as key components of our overall quality strategy at ESO. Our focus on personalized customer service and support lead to speedy quotation processing and short delivery times. Efficient and effective processes make it possible for us to offer our customers not only quality products and a high level of personalized service, but also attractive pricing.


  • IPC-A-600 Class 2-3
    (approval criteria for printed circuit boards)
  • IPC-A-610 Class 2-3
    (acceptance criteria for electronic boards)
  • CECC 00802
    (soldering ability of components)


For customers requiring the highest standards above and beyond those established by IPC-A-610 Class 3, we have defined our own production standards, "3+", which include even stricter acceptance criteria.



active customer BOM


active customers