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About us

TopOne Information Technology Limited (TopOne) provides one-stop professional IT services to simplify our customers' IT management and leverage their returns on investment (ROI).  By employing our services, you can focus resources in activities that have direct impact to your business.

Empowered by TopOne, SendBig is developed by a team of experienced computer experts.  It is an innovative solution for eliminating the bottleneck of sending big files by email.  SendBig provides a value-added service on top of our email service and it is absolute free for our customers.