Seqens Custom Specialties (formerly Chemoxy International Ltd) is one of Europe’s largest contract manufacturers, combining the speed and agility of a small/medium sized company with the Health Safety and Environmental performance of the best major chemical corporations.

Our Middlesbrough site has carried out distillation since 1868 and our Billingham site was added to the portfolio in 1994, with a major expansion completed in 2014. A further significant investment was made in a dedicated cosmetic ingredients plant in 2020 and followed up with a dedicated filling line in 2024 capable of filling down to 10litres.

In addition to custom processing, our company manufactures a range of environmentally-friendly coalescent solvents which are used in the latest generation of water based paints.

The business has a large proportion of exports sales and employs over 180 highly skilled workers across the two sites. Seqens Custom Specialties has a long established reputation for technical excellence, confidentiality and EH&S compliance.

We build strong partnerships with our customers and work very closely with their technical teams to develop innovative solutions for operating challenges. We enjoy long term relationships on many levels with our customers and we pride ourselves on our integrity, customer focus and reliability, amongst many other attributes.