The 19th China International Scientific Instrument and Laboratory Equipment Exhibition was successfully held in China National Convention Center in Beijing during May 10-12, 2021. Hangzhou Mingshu ventilation equipment Co., Ltd., a professional manufacturer of plastic anti-corrosion and acid-base resistant centrifugal fans, was invited to visit in the exhibition for the first time. We met many customers who made fume hoods and colleagues who produced exhaust fans in laboratories. We found that there were no plastic anti-corrosion fans similar to our MPCF series at the exhibition. MPCF series anti-corrosion fans are especially suitable for supporting laboratory fume hoods. We hope to participate in such exhibitions in the future so that more customers can know us well.