- Operate and maintain the Customers’ SRM systems, ensuring accurate data management and smooth processing of customer-related documents. - Prepare and send Statements of Account (SOA) to customers on a regular basis, proactively supporting timely payments and minimizing overdue balances. - Make delivery plan for customers - Control PO from the customers and closely working with customer for delivery to satisfy customer requirements. - Handling precursor declaration and chemical declaration for imported cargo & exported cargo (if any) - Control & manage NG & return NG to suppliers/customers. - Be responsible to place PO to suppliers; follow up and control this category of materials to meet the timing and reliability of the company. - Based on Purchase Requisition, or forecast from Sale team, purchase materials per purchasing procedure and company’s policies.