QUESTION: Fix punctuation: There are often complains of chemicals getting mixed up with one another during the time of transportation and delivery 
ANS: There are often complains of chemicals getting mixed up with one another during the time of transportation and delivery .

QUESTION: Fix punctuation: Promotes weight loss decreases high blood pressure and relieves skin problems
ANS: Promotes weight loss, decreases high blood pressure, and relieves skin problems.

QUESTION: Fix punctuation: Transparent nightie with rhinestones plus size in the range xl2xl and color black  silver Transparent nightie with rhinestones plus size in nightgowns 
ANS: Transparent nightie with rhinestones, plus size in the range xl/2xl and color black / silver. Transparent nightie with rhinestones, plus size in nightgowns .

QUESTION: Fix punctuation: Cheap apartments for rent in Korcula Air conditioned accommodation in Lumbarda 50 meters from the center of town
ANS:
Cheap apartments for rent in Korcula. Air conditioned accommodation in Lumbarda, 50 meters from the center of town.