Alexandria Gluten Free LLC

Rocla Concrete Tie is a manufacturer of concrete railroad ties and related construction products. The company provides a variety of products, such as engineered materials, aggregates, contaminant-free mixes, stone products and concrete products. It specializes in railroad construction. It offers engineering and technology-based solutions in addition to site supervision, process monitoring, quality control, surface alignment, gauge holding and petrographic examination services. Its areas of operation include material procurement, custom processing, transportation, construction, drilling, cutting, laying and pressing. It undertakes commercial, industrial and municipal projects. The company provides services for the construction of railroads, commuting passages and highways. Rocla Concrete Tie has one of its manufacturing facilities located in Bear, Del.

Graver Technologies designs, develops and manufactures products that facilitate and enhance separation, purification and process filtration. It specializes in the trace contaminant removal and purification of process water, fluids, compressed air and process gasses. The company also adds solutions for critical purification applications. It offers a broad selection of ion exchange resins and services, specialty absorbents and filters for the most demanding application environments. Graver Technologies serves industries that include power generation, food and beverage processing, pharmaceutical manufacturing and chemical processing. The company is also a supplier of filtration products to manufactures of pumps, turbines and compressors, as well as numerous medical device, consumer and industrial vacuum manufacturers. Graver Technologies has an office in Glasgow, Del.