The Gwent Group

Originally founded as Gwent Electronic Materials Ltd.

A company founded in 1988 with the object of manufacturing materials for the electronics and associated industries. Products are manufactured directly for individual customers and are tailored to suit specific processes. Since its founding GEM Ltd. has grown to become a major supplier of paste and ink to industry. The current capability of the production facility is in the region of 100,000.00 to 200,000.00 Kg of paste per year. All pastes can be made in our own designed, latest fully computer controlled dispersion equipment. This is coupled with an extensive range of testing and analysis equipment to ensure that our products meet the highest standards.
Our company makes mostly inks and pastes, so that other companies can produce the components, biosensors, sensors, circuit boards, etc.
In general terms we seek out the Manufactures of Sensors, Biosensors, Electronic components, and other users of conductive inks.The gwent group building

For our conductive inks we use the full range of precious metals (Silver, Gold, Silver/Chloride, Palladium, Platinum, etc.) and non-precious metals (Carbon, etc.).
We are particularly interested in Biosensors and PTC components, Electroluminescent Materials, also PZT multi-layer parts for actuator or automotive use; these are the areas that we are promoting heavily in Europe.

Our company also prefers to work closely with companies to make and or develop new materials with them. We do not as such have a "Standard Range" of products but can produce for our customers what materials they wish. The advantage of this is that products are turned specifically to our customers manufacturing plant.

We seek new companies to work with primarily to form long-term relationships with.

We do not consider ourselves a low cost supplier we wish to provide quality products designed specifically for the consumer application.
GEM Ltd is fully accredited to ISO 9001:2000, TS ISO 16949 (Quality standard for producing materials for the Automotive industry) & ISO 13485 (Quality standard for producing materials for the Medical industry) This enables customers to take both the products and research results with the confidence that all processes, developments and raw materials specifications are carried out to an agreed international standard along with full traceability.

The product ranges that GEM Ltd. covers includes conductor pastes that may contain precious metal or non-precious metal, for all forms of substrates, passive or active components; dielectric pastes for all forms of substrates, passive or active components; polymer based pastes for all forms of substrates both precious metal containing and non-precious metal containing; pastes for sensors, industrial, automotive and biosensors; pastes for all forms of passive components. GEM Ltd. also has a complete range of a new type of synthetic metallo-organic materials for the electronics industries and for decorative applications, on the full range of substrates or materials.
Another new range of materials is for the electroluminescent market. A silver based paste to contact onto ITO coated polymer film. A highly conductive carbon paste to act as the other electrode. This can be complemented with a silver layer for larger panels. Dielectric and phosphor pastes are also available for high brightness and long life panels.
GEM has developed a range of Materials suitable for application by ink jet equipment this product range includes conductive as well as insulative inks. Using our special technology we can produce both: low temperature inks for polymer substrates and high temperature inks for firing onto ceramic substrates.

These are only a few of the extensive range of materials that is available from Gwent.

The Company operates to benefit our customers in a number of ways: -

Provision of materials to exact customer specifications.
Matching of product to process by joint collaboration and sampling.
Contract research to build new products to exact specified requirements or to suit individual processes. This service includes the development of pastes or inks; the screen-printing of electrode systems for customers for evaluation or production; the assistance in design of plant and production systems.
Provision of industry standard materials.


In 2001 Gwent Electronic Materials Ltd. invested heavily in Applied Enzyme Technology Ltd, and the business was relocated to the same site as the parent company. This partnership has brought together expertise in electronic materials and enzyme stability, which has strengthened the company's business in the biosensor market.

With access to all the above technology, we are in the unique position to be able to offer a:-

1 Stop Shop for Materials

For the development and production of biosensors. This has been taken one step further, as the Gwent Group can now provide the complete biosensor package including specialised instrumentation due to close collaboration with specialist instrumentation development companies.
Applied Enzyme Technology Ltd (AET) is a company with core expertise in protein stabilisation. Application of our expertise and patented technology has resulted in the stabilisation of over 50 proteins to date with a wide range of industrial applications. Many technologies are being replaced by more "green "enzymatic processes, hence the interest from the biosensor, pharmaceutical, environmental and household product industries in our stabilisation processes.

Stabilisation Products & Services

The enzyme/protein stabilisation kit manufactured and marketed by Applied Enzyme Technology Ltd. is the result of 7 years of expertise in the field of protein stabilisation. This was launched in the summer of 2001 and has met with considerable interest from the US, especially in the Diagnostics industry.

AET can manufacture bulk quantities (up 100s of litres) of stabiliser formulations.

Due to the synergy of AET and the parent company Gwent Electronic Materials, our company is in the unique position to be able to offer the in house development of electronic and enzymatic components of biosensors.

This polyenz process produces pre-stabilised enzymes, which can then be immobilised onto or into a variety of matrices for the production of stabilised functional enzymes on biosensor surfaces, biocatalysts for production of pharmaceuticals, chemical synthesis and bioremediation.

The company carries out contract research for clients with protein stability problems for specific applications.

Using the company's patented technology and in house know-how, this has resulted in the successful stabilisation of enzymes, antibodies and pharmaceutical proteins to thermal, chemical and proteolytic degradation for use in biosensors, application creams, diagnostic kits, sterilisation solutions and laundry products. The methodology involves the modification of the microenvironment of a protein target, which essentially leaves the protein structure unaltered while retaining high biological activity. The protein groups successfully stabilised include:
Antibodies (conjugated & unconjugated), Esterases, Hydrolases, Kinases, Lipases, Luciferase, Oxidases, Oxidoreductases, Peroxidases, Phosphatases, Proteases.

Stabilisation of bio molecules used to produce specific responses in biosensors is a highly specialised area of protein stabilisation. The companies business is now further enhanced by the close relationship with its parent company Gwent Electronic Materials Ltd.

The basis of the PolyEnz process, involves the immobilisation of pre-stabilised enzymes. This process has been developed to produce stable working biosensors in the human healthcare and environmental monitoring sectors, stabilised biocatalysts for biosynthetic processes, biodegradation and waste treatment systems, as well as the biotransformation and production of drugs and their precursors.

We possess the ability to increase the shelf life and operational stability of enzymes and antibodies both in solution and in the dry state. We carry out contract research for clients with protein stability problems. AET also markets a protein stabilisation kit, which can be used by clients to extend the shelf life of their proteins both in solution and in the dry state. Furthermore we provide these stabiliser & formulations in bulk quantities.

Our technology has been used to extend the life of over 50 proteins to date, typically from several weeks to over 1 year at temperatures up to 50ºC.

Our technology has been used in the following industries where the stability of enzymes/antibodies is essential:
Diagnostic industry for stabilising antibodies components.
Biosensor industry where we have stabilised and immobilised proteins at sensor surfaces.