US circular knitter Culp Inc. has reported a drop in net income for its first quarter, hurt by a significant increase of low-cost imported mattresses from China. For the first quarter ended July 29, 2018, net sales were $71.5 mn, compared with $79.5 mn a year ago while net income was $957,000, or $0.08 per diluted share, compared with net income of $5.0 mn the previous year. Mattress fabric sales for the first quarter were $37.0 mn, compared with $48.4 mn for the first quarter of fiscal 2018.