Add punctuation: The watch is made of stainless steel with sapphire crystal
A: The watch is made of stainless steel with sapphire crystal.

Add punctuation: To be sewn with cross stitch on white Aida with 54 threads per cm 14 after black white count pattern
A: To be sewn with cross stitch on white Aida with 5,4 threads per . cm ./ 14" after black/ white count pattern.

Add punctuation: Manureslurry may contain chemical substances such as remnants of medicine hormones mercaptanes carbondioxid ammonia methane disinfectants hydrogen sulphide etc These substances all have a toxic potential and might be spread along with the manure
A:
Manure/slurry may contain chemical substances such as, remnants of medicine, hormones, mercaptanes, carbondioxid, ammonia, methane, disinfectants, hydrogen sulphide etc. These substances all have a toxic potential and might be spread along with the manure.