1824971 YCF young child formula 18 1824972 YCF Yangqing Chenfei formula 2 1824969 YCF yizhi jiannao granule concentration fluid 2 1824967 YCF yearling cow flank 1 1824968 YCF yellow crescent fraction 1 1824973 YCF Yiqi Chutan formula 1 1824970 YCF young child feeding 1 1824974 YCF Yucan Formula 1 1824975 YCF Yukon Choice Flex 1