Textile maker Dogi International Fabrics on Tuesday announced it swung to a first half pre-tax loss as it was hit by the poor performance of its Mexican operations. The company posted a pre-tax loss of 900,000 euros compared with a pre-tax profit of 2.4 million euros in 2001 but said sales in the first six months of this year jumped 29 per cent to 97 million euros from 69 million euros.