Dear Colleagues,

In this new normal era, the research of science and engineering is an essential part of our survival. The new way of life needs a new way of research.

This new issue of ISJET highlights multidisciplinary contents, which include six original research articles, as follows: A Framework of Blockchain Smart Contract for Sustainable Agri-Food Supply Chain, Engine Oil Change Lead-Time Reduction Using Lean Management in A Commercial Vehicle Service Centre, Enhancing Information Retrieval System through Web Crawler for Design and Build Company, “Keep It Cool” Smart Bag by the Internet of Thing (IoT) for Better Living with Alternative Design, Regular Elements on a Semigroup of the Pairs of Terms and Relational Terms of Type ) and The Review of Modes of Operation and Randomization in Smartphone Passive Monitoring using WI-FI Probe Context.

All authors and readers from around the world are invited to visit the website https://ph02.tci-thaijo.org/index.php/isjet/index. This link will grant you to submit your research to publish in our journal or will access electronic versions of all issues of our journal.

On behalf of the Editorial Board, I would like to take this opportunity to thank everyone who has complimented our goal by contributing to the ISJET.

With kind regards,

Assoc. Prof. Dr. Parinya Sanguansat

Editor-in-chief