Abstract:
The objective of this industrial research project was to study the customer dissatisfaction problem in
a sheet metal fabrication factory, AMP METALWORKS (THAILAND) Co., Ltd. AMP was a
medium size sheet metal fabricator company. It was found that the customer satisfactory indicator
was at 83%. Therefore 84% was set as a new target which could be achieved by shortening the
product delivery lead time. First, we studied the core business process flow which was divided into
2 processes, a prototype process and a job order process. By using an Arrow Diagram, we found
that the waiting time in purchasing process for 0.5 day. Then, we studied the production process
flow in details and utilized the 5WlH technique to investigate the root causes of the problem. Non
value added jobs, resulted from the organization structure and complex interactions within the
process flow, were identified. Consequently, the ECRS principle was found suitable to be applied
in this case to reduce non-value added jobs, and the business process was redesigned to become a
one-stop service. Furthermore, Quick ERP software was introduced into the system together with
reordering the working processes led to a more flexible process overall. After the improvement
measures were executed, the process lead time was reduced by 28.57% and the job order process
lead time was reduced by 32.1%. The customer satisfaction index was also raised from 83% to 85%,
surpassing the target.