The editor made grammatical changes to the article: such as the correct use of "a" and "the". In addition, the editor also modified the expression. After revision, the article is smooth and easy to understand.

Working with LetPub for a journal cover design has been a wonderful experience. The artwork designers perfectly understood the main ideas and requirements for the cover with scientific accuracy and aesthetic vision. The customer support staff was very helpful throughout all the process and provided timely updates about the progress of the project. I do recommend this service and surely will use it again in the future."

The polishing effect is good every time. LetPub is very trustworthy!

The editors of LetPub are very meticulous and professional. This is the second time I have chosen LetPub and I recommend it to my peers. I give a sincere praise, and I am ready for the third time.

We have been incredibly impressed with the outstanding services provided by Research Creative. Their team consistently demonstrated professionalism, expertise, and creativity throughout our collaboration. From the initial consultation to the final deliverables, they exceeded our expectations by understanding our needs and delivering high-quality work on time. Their attention to detail and commitment to excellence have made a significant positive impact on our projects. We highly recommend Research Creative to anyone looking for reliable and exceptional services. Thank you for a job well done!

Many thanks to Doris, a client manager at LetPub, for helping to get our cover illustration production work started during the National Day holiday week. Despite the tight turnaround, the final design met all the requirements and was successfully chosen by the journal for the cover. I will choose LetPub's service again in the future. I wish LetPub great success!

LetPub has edited many of my articles. The editors are very professional and the revisions are well done. The feedback from the editors and reviewers were very good and long-term cooperation will be considered later.

The English editor (scientific editor) not only polished the English of our manuscript, including grammar, punctuation, and overall readability, but also significantly contributed to the academic expression by providing constructive feedback on the paper's framework, constituent elements, results, and conclusions. This included appropriately compressing lengthy or repetitive sections, suggesting structural modifications, identifying ambiguous passages, rewriting academic descriptions, questioning certain statements in the paper, and offering constructive academic suggestions. All of these insights and assistance have been very inspiring and helpful for us as authors. Thank you very much to the editor.