Electric Wafer Hard Seal Butterfly Valves for three eccentric multi-level metal hard sealing structure, the use of a "U" shaped stainless steel ring, the precision of elastomeric seals in contact with the polished three-dimensiona... 699 USD
Furfural is used as a solvent in petrochemical refining to extract dienes from other hydrocarbons. Furfural, as well as its derivative furfuryl alcohol, can be used either by themselves or in together with phenol, acetone, or urea...
