Manufacturer's Websites Global Detection Systems Corporation www.gdscorp.com Simtronics ASA www.simtronics.no Net Safety Monitoring Inc. www.net-safety.com Analytical Technology, Inc. www.analyticaltechnology.com Spectrex Inc. www.spectrex-inc.com H2scan Corp. www.h2scan.com Clifford & Snell www.cliffordandsnell.com Portagas, Inc. www.portagas.com Advanced Calibration Designs, Inc. www.goacd.com