n 1989, Pro-Flex enlisted the help of a world-class chemist to develop 35/AA, an exclusive formula that let us cast specialized rubber products for Bombardier Transport, then a major client.
![Pro Flex 599b4ac8c5300 Pro Flex 599b4ac8c5300](https://img.masstransitmag.com/files/base/cygnus/mass/image/2017/08/Pro_Flex.599b4ac8c5300.png?auto=format%2Ccompress&w=250&width=250)
n 1989, Pro-Flex enlisted the help of a world-class chemist to develop 35/AA, an exclusive formula that let us cast specialized rubber products for Bombardier Transport, then a major client.