BEGIN:VCALENDAR
PRODID:-//event//iCal4j 1.0//EN
CALSCALE:GREGORIAN
BEGIN:VEVENT
DTSTAMP:20260406T180631Z
DTSTART:20210507T150000Z
DTEND:20210507T160000Z
SUMMARY:pre-bid
LOCATION:    
END:VEVENT
END:VCALENDAR