Information content for new engineering company website

Hello,

I have an engineering business that primarily builds & develop's proto-type systems & components for the automotive, aerospace, marine sectors etc.
The majority of our work involves the fabrication & assembly in all forms of steel products to produce bespoke products in any volume.
I am looking at creating a website to promote this business & need to add content, I can explain what we do & what capabilities we have I am just looking for some help putting this down on paper in a professional manner.

The website is only going to be a few pages, home page, about us, capabilities, industry sectors etc.

Regards

Andy