The solution elaborated from our inhouse development department was as easy as brilliant We just added two roof awnings each with 80 cm to a folding tent 6x4 m already in our assortment of MASTERTENT products from several years

Could you correct the punctuation please?
The solution elaborated from our in-house development department was as easy as brilliant. We just added two roof awnings each with 80 cm to a folding tent 6x4 m (already in our assortment of MASTERTENT products from several years).