Ross Finnie MSP the Minister for Environment and Rural Development officially opened the new Scotbeef facility measuring 120,000 sq ft which replaces a smaller plant at Polmadie.
The new site houses three cold stores capable of holding a total of 5000t and two production areas each the size of Scotbeef's other plant at East Kilbride, Lanarkshire.
Queenslie is an integrated storage, processing, packing and distribution facility, producing 150 different beef product lines a day for the UK market and for export to markets such as Belgium, Holland, France and Italy.
Ian Galloway CBE, chairman of Scotbeef, said: "Our new facility will enable us to provide an even better service for our customers. The dual storage and production facility will increase efficiency and will become the centre for product development.
"Some 170 people are employed at the site and we expect this number to double within the next two years."
Galloway added: "This is a major investment for the Scottish farming industry and we are building on the success of Scotbeef's products."
Finnie said: "We are committed to assisting with new processing facilities and I congratulate Scotbeef for the foresight they have shown investing in this new plant.
"The Scottish Executive has supported this development with £1.2m of assistance. This new facility comes on stream at a time when new opportunities are emerging for the red meat sector and particularly the beef industry with Scotch beef now back on European menus after a ten year absence.
"I wish Scotbeef every success in their new venture and I am grateful to them for the continued contribution they make to the wellbeing of the Scottish food industry."
(Pictured left to right: Adam Muggoch, director Scotbeef Ltd, Ross Finnie MSP, Ian Galloway CBE, chairman Scotbeef Ltd)