Pre-loaded shells, also known as "Night Shells," are a type of firework that is often marketed as being made in the USA. However, the reality is that only the final step of assembly takes place in the states for some brands, especially for larger night shells to save on shipping costs. It is worth noting that this is not always the case, and many standard night shells are made and assembled in China. The components and materials used to make these shells may come from various locations around the world. As a consumer, it is important to carefully read the labeling and packaging information to understand the origin of the fireworks you are purchasing.