Rancangan sistem dan software Material Requirement Planning (MRP) yang terintegrasi antara Production Planning and Inventory Control (PPIC), Warehousing, Purchasing dan Production. Studi kasus : Pabrik teh PT Sariwangi AEA = Software and system design of integrated Material Requirement Planning (MRP) among Production Planning and Inventory Control (PPIC), Warehousing, Purchasing and Production. Case study : Tea factory of PT Sariwangi AEA