Oiltek International's (SGX:HQU) profit after income tax jumped 22% during the first quarter of the year to 5.4 million ringgit from 4.4 million ringgit a year earlier, according to a Thursday filing with the Singapore Exchange.

Revenue, however, declined 5.1% year over year to 46.7 million ringgit from 49.3 million ringgit, due to a decrease in the Edible & Non-Edible Oil Refinery segment.

Oiltek International's order book totaled about 373.4 million ringgit and the orders are expected to be fulfilled over the next 18 to 24 months.

Shares of the integrated process technology and renewable energy solutions provider were up nearly 3% in recent trade.