The corona virus epidemic in 2020 affected the global smartphone market sales, and the Huawei ban has also caused the leading manufacturer Largan to be unable to fill the order vacancy in the short term. In contrast, the epidemic has driven laptops, tablets, and tele-video lenses for home work and remote teaching, which can slightly offset the impact of overall production value. In 2020, the production value of Taiwan's precision optical components declined slightly by 4%, reaching 3.93 billion Taiwan dollars.