Hello,
I am Mangesh Shinde and i have read your requirement and reviewed the attached image file. I am an experienced web developer having 5 years experience in PHP,MYSQL,HTML,CSS,JQuery. I have experience in working with Open Cart framework and have developed online store using Open Cart.
I can complete your requirement for adding serial numbers to products. I can complete the task within deadline and without any bugs.
Looking forward to work with you.
Regards,
Mangesh Shinde