May 25, 2011. /Lesprom Network/. U.S. total printing-writing paper shipments decreased 9% in April compared to April 2010. All four major printing-writing grades posted decreases compared to last April. U.S. purchases (shipments + imports – exports) of printing-writing papers decreased 5% in April. Total printing-writing paper inventory levels increased 3% compared to March 2011, as the American Forest & Paper Association said in a press release received by Lesprom Network. The American Forest & Paper Association is the national trade association of the forest products industry, representing pulp, paper, and wood products manufacturers, and forest landowners.