Considering the premise 'They would then take their body measurements to any of several participating retailers, who pass the information on to their apparel suppliers and have the clothing custom-made.', is 'Participating retailers are always happy to pass the information on to apparel suppliers.' a statement that stands on its own?
They would then take their body measurements to any of several participating retailers, who pass the information on to their apparel suppliers and have the clothing custom-made.###Participating retailers are always happy to pass the information on to apparel suppliers.