{HEAD ~ The process} for manufacturing the products involves {TAIL ~ the following operations}: mixing the ingredients; grinding; homogenization; and packaging of the product in a metal spray can with an air chamber 
involves
{ HEAD ~ The process } for manufacturing the products involves { TAIL ~ the following operations } : mixing the ingredients ; grinding ; homogenization ; and packaging of the product in a metal spray can with an air chamber
HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH