Modular Clean Room is disclosed for maintaining an environment free of particulate contaminants comprising prefabricated modules, which are detachably connected to form a self-supporting structure having interior space, through which filtered air is flowed. Modular clean rooms are suitable for pharmaceutical and medical device applications.

Municipal engineering includes all of the civil and environmental engineering services required to address the complex infrastructure, environmental and land use issues facing municipal governments. It provides planning, design, construction and regulatory services. Major activities include network planning for municipal services, functional and detailed designs, land development, traffic management and operations, parking control and enforcement, construction and project management services, technical support services, and regulatory control through bylaw enforcement.

Night vision film provides higher light transmission while providing strong performance. This film is commonly used in residential applications where both visible light and control of heat are equally important. Night vision film has a low interior reflectivity that provides clear view, especially at night. This film offers abrasion resistant coating for added durability.