PTC provides third party, independent, engineering for Florida statewide product approval, Miami-Dade N.O.A., Texas Department of Insurance (TDI) product approval, site specific engineering, and product design. Expertise is in building products such as, windows, doors, storefront, curtain-wall, skylights, garage doors, and any exterior building product prone to hurricane winds and impact. Product Design Group can develop products from an idea to mass production.