A better understanding of the process to produce specific documents both in Thailand and English. To help reduce the duration. Reduce the cost of production. Caused delays in understanding documents and communications. In addition, the analysis of the causes of problems in each stage by working together with the project manager. Engineering, manufacturing and project coordinators to provide feedback to customers both in Thailand and abroad. Apart from this, the most important responsibility want to communicate with foreigners and locals in the same understanding of the highest. Therefore, the standard score on the exam TOEIC≥650 to make a contribution to the effective performance and enables organizations to perform better.