We are not responsible for the customer's negligence of the products they purchased. But we will try to solve the problem as much as possible. Request for refund of the purchased product must be made within 7 days from the order-received date by sending a mail on firstname.lastname@example.org The costs associated with this must be paid by the consumer.
USB & DVD
if USB is not working he may call our technical expert . if he fails to sort out problem. you may send USB back to our address , we will replace USB. if we are fully convinced that with all our efforts USB is not running we may refund the amount paid by you. it will be solely decided by directors of nucleon chemistry classes