You have chosen to sponsor your bid up to a maximum amount of .
I require 28 unique articles written on each of the below keywords.
the wordcount is 400 - 500 words per article.
The freelancer hired will need to do the research themselves.
air operated diaphragm pumps
chemical dosing pumps
chemical poly pumps
electric diaphram pumps
magnetic drive pump
positive displacement pump
progressive cavity pump
types of pumps