David Treeby, Elders Real Estate, Albany, said the sale would be of benefit to the whole of the WA dairy industry.

"The buyers are a broad-based Chinese company that has interests in film and television as well as being involved in international trade, including food and dairy products," Mr Treeby said.

"They see this investment as long-term project of co-operation and growth not only for the benefit of themselves but for the local and state wide dairy industry as well as the local economy.

"It is the company's intention to make a further substantial investment in equipment at the factory on Ravenhill Dairy with the installation of a high temperature pasteurisation plant for fresh milk and a milk powder production plant that will be some of the most advanced equipment available in the world."

He said the company wanted to realise large scale dairy production of its own by increasing the number of cows milked at Ravenhill Dairy to the maximum economic and sustainable level of the farm.

"They also want to promote growth of milk production in the local district to supply the new factory as a way to improve the export output from the Albany and Mt Barker districts to international markets," Mr Treeby said.

"The buyers will use their own intrinsic advantage of owning film and TV interests to promote the Mt Barker and Albany district's reputation of being a reliable cool clean and green environment for production of high quality safe milk and food products from WA as well as the highly regarded Ravenhill Dairy brand name.

Mr Treeby said the the buyer's intention was to continue to produce high quality milk products for the local market and directly target the upper end of Chinese and international consumers for export.