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Plant Marvel Laboratories, headquartered in Chicago Heights, IL, has been at the forefront of the fertilizer industry since its establishment in 1922. The company is renowned for pioneering the use of water-soluble fertilizers, significantly contributing to the advancement of soilless growing and hydroponics with their original Hi Phosphate formulation. With over 90 years of experience, Plant Marvel continues to innovate and provide high-quality products tailored for various agricultural applications. Their commitment to excellence has solidified their reputation as a trusted resource for growers seeking effective nutritional solutions for plants. Generated from the website

Founded in 1979, Rail Exchange provides locomotive and freight car parts to the railroad industry. The company manufactures more than 120,000 grab irons and other railcar parts for locomotive and freight car manufacturers, as well as repair shops. It supplies a range of locomotive parts, including cylinder head bolts and hand rails, supports and assemblies. Rail Exchange serves various freight car manufacturers with railcar parts, such as ladders. The company supplies two-, four- and eight-step ladders for tank cars, as well as freight cars. Its ladders feature huck-bolted and riveted bolted assemblies. Rail Exchange additionally supplies a variety of tank car parts that includes eyebolts, placard holders, billing card holders, center and brake pins, follower blocks, sill steps and formed headers. The company is located in Chicago Heights, Ill.