(Reuters) - Chinese grocery app Dingdong Maicai, backed by investors including Sequoia Capital and Tiger Global Management, filed for a U.S. initial public offering on Tuesday, as it seeks more funds to compete in a crowded sector. The COVID-19 pandemic has fueled online demand for fresh produce in China, with e-commerce companies including Dingdong, Alibaba Group and Pinduoduo competing aggressively to grab a major slice of that vast market. Established in 2017 in Shanghai, Dingdong last month raised $330 million, in a funding round led by SoftBank Vision Fund, bringing its total fundraising to over $1 billion. (reut.rs/3w7aLVc) Dingdong plans to list its shares on the New York Stock Exchange under the symbol "DDL", according to the company"s filing. (bit.ly/3g2hdHq) Morgan Stanley, BofA Securities, Credit Suisse and Mission Capital are underwriters for the offering, Dingdong said. Reporting by Ankit Ajmera in Bengaluru; Editing by Anil D’Silva Our Standards: The Thomson Reuters Trust Principles.