Does Ultra Pro have a monopoly in the trading card industry?

Trading cards are picture cards which generally feature cartoon characters and are traded and collected by children. Ultra Pro is a leading company for designing and manufacturing trading cards and gaming products. Card sleeve is one of the products which is produced by Ultra Pro and is used for protecting trading cards and keep them stored safely. There are other companies which manufacture similar card sleeves and other gaming accessories. KMC is one of the companies competing with Ultra Pro. Therefore, Ultra Pro faces competition in the trading card industry and does not have a monopoly in the market.