China Interdye is the only international trade fair in Asia dedicated exclusively to dyes and chemicals for the textile, leather, paper, ink, detergent, cosmetics and agro-chem industries. Organised by the China Dyestuff Industry Association and Adsale Exhibition Services, the 22nd edition will be staged 17-19 September at the Shanghai New International Expo Centre. More than 600 exhibitors from 16 countries and regions will occupy 40 000 m² of space, presenting eco-friendly reactive, disperse, acid, direct, vat, sulphur and natural dyes, optical brightening agents, pigments, auxiliaries, intermediates, colour-measurement instruments, waste-water treatment solutions and R&D services. A three-day concurrent conference streams technical papers on low-liquor-ratio dyeing, digital colour communication, REACH and ZDHC compliance, bio-based colorants, micro-fibre capture and closed-loop manufacture. Keynote speakers include senior regulators from the Ministry of Ecology & Environment, global sustainability directors of brands such as H&M, C&A and Target, and R&D heads of major dye manufacturers. Target visitors are mill managers, laboratory technicians, purchasing directors, formulators and designers from textile mills, tanneries, printing plants and chemical distributors. The 2024 show introduces a “Green Innovation Zone” where only products certified to Bluesign, Cradle-to-Cradle or GOTS may be displayed, and a “Digital Factory Theatre” offering live demonstrations of automated dispensing and colour-matching systems. A match-making app released two weeks before the fair arranges one-to-one meetings; last year it generated 3 800 appointments. Admission is trade-only; the event is held in-person with no online component. Pre-registration through the official website is free until 31 August; on-site badges cost RMB 50. Concurrent pavilions from India, Korea, Taiwan and Germany return, while first-time national group pavilions from Brazil and Turkey are planned. Organisers expect 18 000 professional visitors from 50 countries, a 12 % increase over 2023.