Plenum-grade cables and Polyvinyl Chloride (PVC) cables refer to two types of materials used in the insulation and jacketing of cables, distinguished primarily by their location of use and their reaction to fire. Plenum-grade cables are designed for use in spaces where air circulation for heating, ventilation, and air conditioning (HVAC) systems occurs, known as plenum spaces. These cables are made from materials that resist fire and emit low smoke and no toxic fumes when exposed to fire, making them safer for use in these areas. Polyvinyl Chloride (PVC) cables, on the other hand, are made from a type of plastic that is durable and affordable but can release toxic fumes when burned. PVC cables are typically used in non-plenum spaces where the risk of fire spreading through air ducts is not a concern. The key difference lies in their safety features and the specific applications based on building codes and safety standards.

In Illinois, Engel injection molding machines are primarily sold through Engel North America, part of the global Engel Group specializing in plastics machinery. They provide sales, service, and support for their injection molding machines and have a network of representatives and distributors focused on offering tailored solutions to meet specific manufacturing needs. Interested buyers can contact Engel directly or visit their website to get in touch with a local sales representative. Additionally, there might be independent machinery dealers in Illinois that offer used Engel machines, providing a cost-effective alternative to purchasing new equipment. It's always recommended to ensure any used machinery dealers are reputable and offer post-sale support.