The big Sumisho Computer Services Co has begun marketing a range of packages for the DEC VAX series to complement its system integration services: in the first part of the operation, Sumisho has acquired from ASR International exclusive rights to six software packages which run on the VAX superminis and workstations, including Exsys, an expert system development support tool which has already been sold to 300 companies running on the NEC PC 9800 series and the Sony Corp NEWS Unix workstation; and the Blast communications package, which can be used to link the VAX to mainframes and Unix workstations alike; Sumisho Services looks for $600,000 of new business from the move in the first year.