Apparel maker Roo Hsing Garment Co Ltd on Tuesday posted a 89.6 per cent year-on-year jump in nine month pre-tax profit on the back of surging orders to the US from its plants in Cambodia and Vietnam. The company said its pre-tax profit in the first nine months of 2002 was NT$81m (US$2.3m) versus NT$43m (US$1.2m) in the year-ago period as it reaped the rewards of Vietnam's recent trade deal with the US.