Contact information

Contact GTfiber for help with a listed product, an order, delivery, a return or refund, payment, or a website issue.

1. Contact details

Store: GTfiber
Website: www.gtfiber.us
Email: support@gtfiber.us
Phone: +852 5186 9813 (Monday–Friday, 9:00 a.m.–6:00 p.m. Hong Kong Time)

You can also use our Contact Us form. For an existing order, include the order number and the email used at checkout. For product help, include the product name or SKU and the listed specification you want to clarify. Please do not send full card numbers, security codes, passwords, or confidential network information.

2. Customer-service hours

Email: Monday–Friday, 9:00 a.m.–6:00 p.m. U.S. Eastern Time (ET). We reply within 24 hours on business days. Messages received outside these hours are answered on the next business day.

Phone: Monday–Friday, 9:00 a.m.–6:00 p.m. Hong Kong Time (HKT).

A case that requires carrier investigation, product testing, or identity verification may take longer to resolve; the first reply is not a promise of same-day resolution.

3. Company information

Legal operator: GT-FIBER COMMUNICATION CO., LIMITED
Registered business address: Flat B02, 2/F, Hoover Industrial Building, No. 26–38 Kwai Cheong Road, Kwai Chung, Hong Kong.

Orders ship from our fulfillment center in China. The address above identifies the store's operator. It is not a return address. Request authorization and the correct return address before mailing any goods.

4. Help and policies

Last updated: September 26, 2026.