•Receiving customer inquiry and sample/drawing, preparing New Item Inquiry and sending Quotation and sample to the customer.•Inquiring to customer all requirements related to the product and disseminate to concerned department.•Receiving drawing/specifications and guidelines from customer and endorsing to Design and QMR respectively for registration to DCC.•Preparing and issuing of Job Order for quotation/sample request and Purchase Order received from customer.•Coordinating with the customer regarding delivery schedule, balance in delivery, return of rejected delivery, special approval and other issues.•Preparing Daily Loading and issuing to concerned department, and following-up status in production and delivery.•Preparing Delivery Receipts and Sales Invoice for finished goods.•Monitoring the status of customer Purchase Order and delivery and coordinating with customer in case of possible late delivery.•Coordinating with customer regarding the customer-owned tools, jigs and materials.•Preparing Revision Notice in case of customer change, registering it to DCC and updating the Revision Notice Monitoring Record for the status of implementation.•Informing customer and submitting documents in case of 4M change.•Receiving notice/complaint from customer, preparing Customer Complaints Report, issuing of Corrective and Preventive Action Report (CPAR) and submitting the accomplished CPAR to the customer.•Sending Customer Satisfaction Survey once a year to active customers, preparing Customer's Satisfaction Survey Monitoring Report, analyzing the result of survey and coordinating with •Receiving customer inquiry and sample/drawing, preparing New Item Inquiry and sending Quotation and sample to the customer.•Inquiring to customer all requirements related to the product and disseminate to concerned department.•Receiving drawing/specifications and guidelines from customer and endorsing to Design and QMR respectively for registration to DCC.•Preparing and issuing of Job Order for quotation/sample request and Purchase Order received from customer.•Coordinating with the customer regarding delivery schedule, balance in delivery, return of rejected delivery, special approval and other issues.•Preparing Daily Loading and issuing to concerned department, and following-up status in production and delivery.•Preparing Delivery Receipts and Sales Invoice for finished goods.•Monitoring the status of customer Purchase Order and delivery and coordinating with customer in case of possible late delivery.•Coordinating with customer regarding the customer-owned tools, jigs and materials.•Preparing Revision Notice in case of customer change, registering it to DCC and updating the Revision Notice Monitoring Record for the status of implementation.•Informing customer and submitting documents in case of 4M change.•Receiving notice/complaint from customer, preparing Customer Complaints Report, issuing of Corrective and Preventive Action Report (CPAR) and submitting the accomplished CPAR to the customer.Sending Customer Satisfaction Survey once a year to active customers, preparing Customer's Satisfaction Survey Monitoring Report, analyzing the result of survey and coordinating with