---
title: Contact Us｜RainbowOne
description: Reach us for support or assistance by filling in the online form or email us. We will be in touch shortly.
image: your_generic_website_image.jpg
---

### Address

[Room1803,18/F, Global Gateway Tower, 63 Wing Hong Street, Cheung Sha Wan, Kowloon](https://goo.gl/maps/5u8w4RVfCSZhLTPA8)

### E-mail

[enquiry@openknowledge.hk](mailto:enquiry@openknowledge.hk)

### Call us

[(+852) 2191 1000](tel:+852-21911000)

### WhatsApp

[(+852) 6428 0643](https://wa.me/85264280643)

### Contact Us