Why did CB luncheon meat leave China?

There is something wrong with clenbuterol in CB luncheon meat. The World Cup luncheon meat will be withdrawn from China because of the problem of lean meat in American pork. CB is a brand from America, and its products are world-renowned. Can be said to be the originator of canned lunch meat. The brand's lunch meat products have a variety of flavors, including classic original flavor, black pepper flavor and garlic flavor.