INVENTORY CONTROL MANAGEMENT AND BUSINESS PERFORMANCE IN THE RWANDAN MANUFACTURING SECTOR CASE OF SULFO RWANDA By MUGISHA JEAN REMY Reg. Number: MSCP/21/01/6488 THESIS SUBMITTED TO THE GRADUATE SCHOOL IN PARTIAL FULFILLMENT OF THE REQUIREMENTS FOR THE AWARD OF THE DEGREE OF MASTER OF SCIENCE IN PROCUREMENT AND SUPPLY CHAIN MANAGEMENT OF THE UNIVERSITY OF KIGALI 2022