They have a case with a screw back and a mineral crystal sapphire crystal that is both non reflective and scratch resistant

Can you repeat this sentence, but add in punctuation?
They have a case with a screw back, and a mineral crystal / sapphire crystal that is both non reflective and scratch resistant.
input: If this equation is multiplied by 1r the result is which reduces to
fixed: If this equation is multiplied by (1+r) the result is which reduces to
input ---- Along with aloe vera which fights dandruff effectively this hair mask left on the scalp and hair for an hour before washing it works against hair loss from dandruff
output ---- Along with aloe vera which fights dandruff effectively, this hair mask, left on the scalp and hair for an hour before washing it, works against hair loss from dandruff.
Add punctuation: If the sequences ended then the sum could defined in terms of starting with the rightmost digits and expressing the sum in terms of the carry operation
A: If the sequences ended then the sum could defined in terms of starting with the right-most digits and expressing the sum in terms of the carry operation.
QUESTION: Fix punctuation: Through contact to suppliers and producers whose identity appeared from the packaging
ANS: Through contact to suppliers and producers, whose identity appeared from the packaging
input ---- Transport Telecommunications and Energy
output ----
Transport, Telecommunications and Energy