Synlait has thrown out its earning forecast due to uncertainty over Covid-19 disruption.
'Daigou' trade largely responsible for a decline in earnings over the first half.
A2 Milk first half profit dropped by 35 per cent.
Demand from China is driving up wholemilk powder prices.
Move could pave the way for providing carbon-free, or "green" hydrogen for transport.
NZ meat exporters now face strong NZ dollar.
Mataura Valley made a $47 million loss in 2019.
Clyde and Rena Hollard hold worth $7.45 million.