1) RESIDUAL EXTRACT OF SELECTIVE PURIFICATION (PN-6K) RESIDUE FROM OIL AND PETROLEUM PRODUCTS REFINING OBTAINED FROM BITUMINOUS ROCKS IS USED AS ADDITIVE FOR MOLDING SANDS PR-L: LLC NOVOKUIBYSHEVSK PLANT MAS EL AND ADDITIVES RUSSIA -
1) RESIDUAL EXTRACT OF SELECTIVE PURIFICATION (PN-6K) RESIDUE FROM OIL AND PETROLEUM PRODUCTS REFINING OBTAINED FROM BITUMINOUS ROCKS IS USED AS ADDITIVE FOR MOLDING SANDS PR-L: LLC NOVOKUIBYSHEVSK PLANT MAS EL AND ADDITIVES RUSSIA -