Use of "s" in two consecutive words

In this case, "savings account" is singular because it is operating as an adjective to "products and services."

The phrase says: " ... we offer you a wide range of savings account products and services and fixed deposit products and services ... "

This could have had a different typography, like this: " ... We offer you a wide range of

• Saving account products and services

• Fixed deposit products and services

Or this: "... we offer you a wide range of both (1) savings account products and services and (2) fixed deposit products and services ... "

If it had been expressed a little differently, so that both adjectives were nouns, then there would have been plurals all over the place:

" ... we offer a wide range of products and services for savings accounts and fixed deposits."

But the phrase " ... we offer you a wide range of savings account and fixed deposit products and services ... " isn't complicated enough to require that much elaboration. It can be succinct and still understandable.

Similar uses:

• Our shop stocks a wide range of doll and teddy bear clothes and accessories.

• Jim's Bike A-Go-Go maintains a large inventory of bicycle and tricycle parts and repair kits.

• My daughter Jessica has learned to draw a variety of human and animal faces and feet.

• My cat Sassafras thinks she is the exclusive owner of all kitten and puppy treats and toys.