HONG KONG, March 10, 2025 — i2Cool, a leader in electricity-free cooling technology, has announced a strategic global alliance with Marubeni, a major trading company in Japan. The partnership aims to promote the use of electricity-free cooling technology worldwide, with a focus on jointly creating electricity-free cooling coatings for marine applications and exploring new solutions for the shipping sector.

The signing ceremony included Prof. Martin Zhu, CEO and Co-founder of i2Cool, YASUHIRO ARAI, Assistant General Manager of Marubeni’s Chemicals Department, and Yasuke NAGAI, President of Marubeni Hong Kong & South China Limited. Professor Zhu commented that the Japanese market presents significant opportunities for electricity-free cooling technology due to its embrace of technology and emphasis on environmental sustainability. He added that the collaboration will facilitate localized production breakthroughs, adaptation to Japanese standards, and collaborative promotion strategies.

With global temperatures rising, electricity-free cooling technology is becoming increasingly relevant. This technology provides efficient and innovative energy-saving cooling options for various uses, including green buildings, industrial processes, and general protection. It has already been used in over 200 projects globally, covering an area of more than 300,000 square meters.

i2Cool’s main product, i2Coating, is a sustainable cooling solution for buildings and outdoor equipment, capable of reducing surface temperatures by up to 42˚C and decreasing air conditioning energy costs by 10% to 40%. i2Coating has been successfully used on famous buildings worldwide, such as the Dubai Mall and the Hong Kong Coliseum. Marubeni representatives have praised the coating’s simplicity and effectiveness, expressing optimism about its future market growth.

According to the agreement, the parties will work together to promote the global adoption of electricity-free cooling technology, with a particular focus on expanding into the Japanese market. The partnership will also focus on developing next-generation marine coatings to improve solar reflection and infrared radiation on ships, which will lower cabin temperatures and air conditioning energy consumption.

The companies plan to strengthen their collaboration in key research areas, market promotion, and innovative business models. By continuously identifying new applications, they aim to deliver effective solutions for enhancing energy efficiency, lowering cooling energy use, and tackling global climate change challenges.

About Marubeni

Marubeni Corporation and its subsidiaries utilize extensive business networks both in Japan and internationally to participate in a wide range of activities, including import/export, domestic business, and trade between other countries. Their operations cover sectors such as lifestyle, IT solutions, food, agribusiness, forest products, chemicals, metals and mineral resources, energy, power, infrastructure projects, aerospace and shipping, finance, leasing and real estate, construction, industrial machinery and mobility, next-generation business, and corporate development.

Guided by the principles of ‘Fairness, Innovation, and Harmony,’ Marubeni is committed to contributing to social and economic progress and protecting the global environment through responsible business practices.

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About i2Cool

i2Cool is a pioneering green technology company specializing in passive radiative cooling. Founded by leading professors and young scientists from the School of Energy and Environment at City University of Hong Kong, i2Cool turns advanced research, published in journals like Science, into innovative commercial products.

The company’s main products include electricity-free cooling coatings and window films, along with a variety of other products such as textiles, membranes, automotive solutions, and ceramics. By using proprietary nanomaterials, i2Cool achieves high solar reflectivity and mid-infrared emissivity, enabling zero-energy cooling with temperature reductions of up to 42°C. With applications in nearly 30 countries and regions, i2Cool provides innovative, sustainable cooling solutions for green buildings, industrial uses, and everyday protection. Dedicated to global sustainability and carbon neutrality, i2Cool is constantly developing advanced energy-saving technologies to support low-carbon cities and green communities around the world.

For more information about i2Cool, please visit their official website at

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SOURCE i2Cool Limited

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