CRL vs PRIM Comparison

Charles River Laboratories was founded in 1947 and is a leading provider of drug discovery and development services. The company's research model & services segment is the leading provider of animal models for laboratory testing, which breeds and delivers animal research models with specific genetic characteristics for preclinical studies around the world. The discovery & safety assessment segment includes services required to take a drug through the early development process, including discovery services. The manufacturing support segment includes microbial solutions, which provides in vitro (non-animal) testing products, biologics testing services, and avian vaccine services.

Primoris Services Corp is a provider of infrastructure services operating mainly in the United States and Canada. It provides a wide range of construction services, maintenance, replacement, fabrication and engineering services to a diversified base of customers. The reportable segments are the Utilities segment and the Energy segment. The Utilities segment operates in a range of services, including the installation and maintenance of new and existing natural gas and electric utility distribution and transmission systems, and communication systems. The Energy segment operates in a range of services that include engineering, procurement, and construction, retrofits, highway and bridge construction, demolition, site work, outages, pipeline construction and maintenance, and others.