QEX Logistics expects a challenging first half, with sales for the past two months down 23 per cent but a lift in activity expected in June and July.

The logistics company, which exports Kiwi products such as baby food and health supplements to individual Chinese consumers, said trading in April and May is traditionally quiet and sales in May last year were boosted by clearance sales of discounted stock.

It sees both challenges and opportunities in the wake of the Covid-19 pandemic.

"Demand for milk powder and other New Zealand products remains strong in China, despite the uncertain global economic environment," the company said in its full-year result announcement.

QEX shares fell 1.6 per cent to 60 cents, taking their loss so far this year to 25 per cent.

"The company today reported a 38 per cent slide in net profit to $1.2m for the year to March 31. It attributed the decline to weaker margins in the first half of the year and costs establishing a new base in Sydney. Pre-tax profit dropped 42 per cent to $1.67m, within its May guidance of between 1.5m to $1.7m."

Revenue increased 5.7 per cent to $62.8m and earnings before interest, tax, depreciation and amortisation fell 8.5 per cent to $3m.