Foshan Shunde Taichang Vehicle Technology (TCHAIN) is a leading intelligent manufacturer of bus air conditioners with over 30 years of industry expertise. We are the designated OEM supplier for Yutong, King Long, CRRC, BYD, and Geely, providing 60+ AC solutions for 6-14m buses (electric, diesel, built-in types) covering city buses, coaches, school buses, and special vehicles. Certified with ISO 9001:2015, we operate a provincial engineering research center for new energy bus AC systems, offering end-to-end services including production, installation, and global after-sales support.