Two new propane dehydrogeneration (PDH) units came online in China in July, taking the total number of operational PDH units in the country to 18. And with a wave of new projects starting up in the next few years, we expect PDH will account for a quarter of China’s total propylene production capacity by 2025. With investor enthusiasm for PDH showing no signs of slowing, this insight examines the popularity of this on-purpose technology, seeking to answer these questions: • What is driving China’s unrelenting PDH investment? • How competitive is China’s PDH compared to other propylene production routes? • Where does the propane feedstock come from ? • How will the PDH investment surge impact the international propylene market?