Huber Engineered Materials, a business unit of J.M. Huber Corporation, has implemented a price increase for kaolin products sold to the paper industry, effective Jan. 1 or as current price agreements expire. Prices will increase on average 3 percent to 6 percent, depending on the product grade and the level of pre-increase prices in specific cases.        In addition, prices for kaolin products sold into industrial applications will increase on average 5 percent to 8 percent effective Feb. 14....