ISTOK is a system that controls inventory, starting from the process of requesting, purchasing, receiving goods, until the issuance of goods and sales is formed.
ISTOK Inventory system enables unprecedented effectiveness in inventory management

Purchase Order
Purchase order is a document that contains a request for goods and is sent to the supplier with the Number, Quantity and Price specified on the document and if the goods have arrived it will be withdrawn to the received document.
PO must pass the approval of the Department head, Purchase Manager, Financial controller and GM