armed escort (of travelers or merchants)
Dart Line (Dart Line AI) is an AI intelligent bidding production platform created specifically for the construction industry, providing full-process services from bid wise writing, business opportunity acquisition to expert consultation, risk prevention and control. Relying on AI technology, the platform can generate the first draft of the bid in 10 minutes, with a 98% or more recognition rate of rejected items, and integrate national bidding information. It has served more than 8,000 construction enterprises, and the cumulative amount of winning bids has exceeded 20 billion.