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HELP CENTER

Contact information

Company info

Company name:
Linear Regression Technology Ltd.
Registered address:
1201 Orange Street, Suite 600, Wilmingto, DE, 19801

Support & Contacts

Business hours:
9:00 a.m. - 5:00 p.m. (GMT-8:00) Mon - Fri

FAQ

After your item is shipped, a shipping notification email will be sent to your order email. The tracking number and tracking link will be sent in the notification. Or you can visit https://www.17track.net/en to track your order.

Please check your email inbox or spam folder.

total delivery time

Delivery time = processing time + shipping time

Processing time: 1-3 days
Shipping time:
Standard Shipping (Free Shipping) Time: 4-10 days
Express shipping time (available in some areas): 2-5 days
Therefore, the total time for delivery is 5-13 days for standard shipping or standard shipping for express shipping.

We ship to most countries in the world. If you do not find your country in the list below, please contact us to confirm before ordering.
North America: United States, Canada
Europe: Germany, Great Britain, France, Italy, Spain, Finland, Ireland, Belgium, Portugal, Austria, Norway, Switzerland, Denmark, Sweden, Netherlands, Greece
Oceania: Australia, New Zealand
Asia: Russia, Japan, Korea, Singapore, Malaysia, Thailand, Indonesia
Middle East: Turkey, Saudi Arabia, Israel

We need 1-3 processing days to ship your order. It depends on the recent order received. So the longest time for orders to ship is 3 days after we receive your order.

Please contact us first to submit a refund/return request with your order number or order email.
Then,
For unshipped orders, we may cancel the order and issue an immediate refund.
For shipped orders, please return the item to us with a paper written on your order number. Once we receive the returned item, we will refund within 24 hours.