Apple suppliers' sales declined 31% in February, which meant that Apple's revenue is not optimistic.
White regularly monitoring the apple core retail sales, if the retailer's sales momentum strong, often means that Apple's sales performance is good, otherwise it means that sales of apple is not optimistic.
Apple core retailers' revenue declined 31% in February this year, far beyond the usual decline of 8%. White also pointed out that, even taken the factors of Chinese New Year holidays into account, the performance were poor.
Apple's largest foundry, HongHai's declined 25% in February. HongHai is Apple's OEM manufacturers, not Apple's suppliers, but the poor performance of the HongHai also reflects the downturn of the Apple.