ENVIRONMENTAL SYSTEMS CORP

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INDUSTRY LEADERS IN AIR EMISSIONS COMPLIANCE We help industrial plants comply with clean air regulations by providing Continuous Emissions Monitoring (CEM) solutions. Read The Source Blog Alliance Technical Group Acquires ESC Spectrum, Cementing Global Leadership in Continuous Emissions Monitoring (CEMS) and Data Acquisition Systems (DAS) ESC Spectrum is now part of Alliance Technical Group, combining forces to deliver the most comprehensive CEMS and DAS compliance platform in the industry. This strategic acquisition strengthens our ability to serve customers with expanded resources, nationwide support, and end-to-end environmental solutions. Learn More ESC Spectrum's Products and Services Software Stack Vision & Prism Data Acquisition Systems Air Emissions Data Management Hardware Analyzers & Sampling Components CEMS Parts CEM Systems 8864 Data Controllers Integrated Systems Continuous.