Glass recycler Recresco has secured contracts with three Welsh councils to reprocess a total of 8,500 tonnes of waste material every year.
The Nottinghamshire-headquartered firm will take collections from Merthyr Tydfil County Council, Powys County Council and Torfaen Council under the latest deals.
All the material will be reprocessed at its Cwmbran depot in South Wales to become new bottles and glass mineral wool insulation.
The Powys agreement is worth an estimated 4,500 tonnes each year, the Merthyr Tydfil deal about 1,500 tonnes, and an extension with Torfaen 2,500 tonnes.
The news comes after Recresco secured deals with Pembrokeshire County Council, Bedford Borough Council and Severn Waste Services earlier this year.
Business development manager Fraser Macintyre said: “We are proud to continue our long-term committed support of Welsh waste management and recycling efforts.
“Wales leads the way in overall recycling rates in the UK, with glass its most widely recycled material.
“Investment at our Cwmbran facility in recent years into state-of-the-art sorting and processing equipment places Recresco in a strong position to continue its ongoing support of Welsh communities in meeting their long-term environmental goals.”
