Pan Asian Microvent Tech (Jiangsu) Corporation (688386.SS) engages in the research, development, design, production, and sale of expanded polytetrafluoroethylene (ePTFE) micro-permeable membranes, aerogels, and related microporous materials for protective ventilation applications. Founded in 1995 and headquartered in Changzhou, Jiangsu Province, China, the company offers a broad portfolio of products including automotive vent plugs, vent membranes, pressure relief valves, and new energy vehicle battery venting solutions; consumer electronics water pressure resistant sound-permeable membranes and microdrying membrane modules; packaging protection gaskets and chemical packaging ventilation seals; ePTFE cable wrapping materials and electromagnetic shielding films; biomedicine membrane materials; condensation management devices (CMD); SiO2 aerogel products; wiring harnesses; water-retaining membranes; seals; sound absorption and insulation products; gas management products; acoustic membranes for MEMS; OLED desiccator diaphragms; and marine supporting equipment, with operations spanning China and international markets including North America, Europe, and Asia. The company serves major automotive clients such as General Motors, Volkswagen, FAW, and SAIC as a Tier-1 supplier, alongside customers in electronics, packaging, and other industrial sectors. Recent developments include plans announced in 2025 to raise up to CNY 698.5 million through a private share placement for project funding and working capital replenishment; shipment of a cumulative 10 million CMD units by May 2024; new patent grants in 2025 for self-polishing antifouling coatings and power battery pack drain valves; initiation of a proton exchange membrane (PEM) factory project in 2022 for hydrogen fuel cell applications; and startup of MEMS acoustic membrane production in 2021 following its IPO listing on the Shanghai Stock Exchange STAR Market.