Legal · Last updated 14 January 2026
Accessibility
We want everyone to be able to use this site, including people who use screen readers, keyboard navigation, magnification or voice control.
Our standard
We aim to meet the Web Content Accessibility Guidelines (WCAG) 2.2 at level AA. Every page is tested with automated tools at desktop and phone widths before it is published, and with a keyboard and a screen reader.
What we have done
- Every page works without JavaScript, and menus can be used with a keyboard.
- Text and interface colors meet contrast requirements.
- Every engineering drawing and chart has a text description.
- Wide tables can be scrolled within the page, so that no page needs to be scrolled sideways on a phone.
- Animation is limited, and turned off if your device asks for reduced motion.
Known limitations
Some older documents, including archived annual reports, are scanned PDFs that may not work well with screen readers. We will provide an accessible version of any document on request.
Reporting a problem
If you find something on this site that you cannot use, write to accessibility@trioptimumcorp.com, tell us the page and what went wrong, and we will reply within five working days.