The Vietnam programme, organised in collaboration with local partner APOLLO, covered Haiphong, Hanoi and Ho Chi Minh City, combining industry dialogue with on-ground deployment of electricity-free cooling solutions.The tour began on March 24 in Haiphong with a fourth anniversary salon and investment exchange session at Taiyo Building. During the event, i2Cool Co-founder and CEO Pro. Martin Zhu outlined the scientific basis of electricity-free cooling technology, including its biomimetic origins and material-based heat management mechanism. He also presented application cases across rooftops, glass façades, photovoltaic systems and cold-chain logistics, highlighting measurable temperature reduction and energy-saving potential.A key focus of the Haiphong session was the launch of i2Cool’s electricity-free cooling nano-particle. Unlike conventional coatings or films, the i2nano-particle can be integrated into plastics, rubber and textile materials, enabling passive cooling at the material level. The launch triggered discussions among local stakeholders on localisation opportunities and industrial applications in Vietnam.Representatives from APOLLO said Vietnam’s tropical climate and rapid urbanisation are increasing demand for energy-efficient cooling solutions, particularly across construction, industrial storage and logistics.Following Haiphong, i2Cool participated in VIETBUILD 2026, held from March 26 to 30 at the Vietnam Exhibition Center in Hanoi. At Booth H1-061, i2Cool and APOLLO showcased a full range of electricity-free cooling solutions, including coatings, films, membranes and textile applications. The booth drew developers, contractors and engineers, with consultations focused on local challenges such as high humidity and solar heat gain.The exhibition created a platform for deeper discussion on how passive cooling materials can be adapted to tropical climates to improve energy efficiency and indoor comfort.The programme concluded in Ho Chi Minh City with a community deployment at an elderly care facility in Tu Hanh Buddhist Temple. In an actively used environment rather than a controlled demonstration setting, i2Cool applied its electricity-free cooling coating through a multi-layer system in a single morning, covering areas exposed to prolonged sunlight and poor ventilation.The project addressed a common issue in such facilities: uneven cooling coverage and high air-conditioning costs. By reducing heat gain at the building surface, the solution is expected to improve indoor thermal conditions while reducing dependence on continuous energy consumption.The initiative also involved local volunteers and partners, supporting implementation and creating a base for post-application monitoring and feedback.The Vietnam tour marks the start of i2Cool’s wider anniversary programme, with upcoming stops planned in Thailand, Hong Kong, Shanghai and Shenzhen. Alongside product demonstrations, the programme is also introducing global partnership frameworks, distribution opportunities and market insights related to material-based cooling technologies across different climate conditions.According to QYResearch, the global passive cooling market is projected to grow at a compound annual growth rate of more than 26 per cent, driven by rising demand for energy-efficient cooling solutions.