Multipurpose trolley design

I am looking for an experienced designer to create a multipurpose trolley design that will be used in medical applications. The trolley needs to be able to compact to a size of 15*4 ft and 10*4 ft, with a maximum gross weight of 300kg. It should be constructed using a base of steel, a body of light aluminum, and plastic trim. Due to its intended use, precision and attention to detail are of the utmost importance. If you have extensive experience in designing trolleys and can guarantee a top-quality product, then I would love to hear from you.