Diploma PLC specializes in technical services. Net sales break down by activity as follows:
- manufacturing of control systems (47.4%): fluid control systems, harness components, wiring and fastening systems used primarily in aerospace, defense, medicine, energy and motor sports sectors;
- manufacturing of seals (34.9%): gaskets, filters, cylinders, machined parts for specialized industrial equipment, cylinder components for repair and maintenance of heavy mobile machinery and industrial equipment, etc.;
- manufacturing of healthcare equipment and environmental management equipment (17.7%): medical devices for pathology laboratories, operating rooms, clinics, etc., environmental analyzers, containments and emission control systems.
Net sales are distributed geographically as follows: the United Kingdom (22.3%), Europe (17.5%), the United States (44.8%) and other (15.4%).
DIPLOMA PLC 
