History

1973

Founded by H. Douglas Christiansen

Laboratory Division Founded

Headquarters open in La Grange, IL

1975

Headquarters moves to Westchester

1976

Engineering Division Founded

1978

Sales/Marketing Division Founded

1979

Chemical Engineering Division Founded

1981

Employee Benefits Division Founded

1986

Headquarters expands and moves to new Westchester office

1988

1996

Accounting/Finance Division Founded

1998

Advertising (ad+one) Division Founded

2007

Sycamore office opens

2013

Supply Chain Division Founded

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