Praxair Inc., Danbury, Conn., signed a renewed agreement with Berry Metal Co., Harmony, Pa., to manufacture Praxair's patented CoJet(r) gas injection system for electric arc furnaces. Berry Metal will continue to provide spare and replacement parts for the coherent jet system, which will now be sold by Praxair Metals Technologies. Praxair and Berry Metal began working jointly on the CoJet system in 1996.