SDI (ASX:SDI) reported its preliminary unaudited sales for the fiscal first half ended Dec. 31, 2024, of AU$51.5 million, falling 1.5% on the prior corresponding period, according to a Friday filing with the Australian bourse.

It reported that net profit after tax in fiscal H1 is expected to be in the range of AU$3.4 million to AU$3.7 million, compared with AU$3.7 million for the prior corresponding period.

Sales rose by 1% after adjusted for currency movement, the filing said.

It said European sales rose 9.7% and Brazilian sales increased 9.2%. However, this was offset by weakness in direct exports to the Middle East and Asia as well as a 14.6% decline in Amalgam sales.

Gross profit margins in H1 rose to 63.5%, from 61.5% in the prior period. Amalgam sales represented 12.9% of total sales, it added.

SDI is expected to release its half-year report on Feb. 27.

The firm's shares fell 9% in recent trading on Friday.