Based on the global industry development and the local situations, circular economy and resource efficiency have been identified as a key technology trend for the Hong Kong fashion industry. The Hong Kong stock exchange has taken the lead and made ESG (Environmental, Social and Governance) disclosure mandatory for listed companies based on measurable key performance indicators such as targets and achievements1. Sustainability is gradually becoming a policy-guided aspect of investment. In terms of the fashion industry, sustainability has already attracted much attention globally, and Hong Kong starts playing a positive role. For example, Fashion Summit (Hong Kong)2 – a sustainable fashion event has been holding annually since 2017, brings together leading academics, key players from the fashion industry, NGOs, media, decision-makers and leaders to achieve sustainable fashion in Asia. Although Hong Kong is no longer a manufacturing base, many local originated manufacturers are still active in the global fashion industry because of high-quality production, good reputation and infrastructure support. With the technology trend of circular economy and resource efficiency, the Hong Kong manufacturers may form the regional niche in sustainability. Global and local models as introduced below are focused on two aspects – process technologies for resource efficiency and recycling for circularity.