Taiwan's Nien Hsing Textile Co, a denim and jeans maker, posted an unaudited pre-tax profit of NT$259.2m (US$1=NT$34.361) in May, up 53 per cent from NT$169.3m in May last year, the company said in a statement Thursday. The export-oriented company attributed the sharp rise in profits to the depreciation of the New Taiwan dollar and higher production at a plant in Lesotho.