Metals-testing is a specialized industry within the broader field of testing laboratories. Companies in this industry are focused on analyzing and evaluating the properties of various metals, including their composition, strength, durability, and other characteristics. This information is critical for a wide range of applications, from ensuring the safety and reliability of industrial equipment to verifying the quality of consumer products. Metals-testing companies use a variety of techniques and tools to perform their analyses, including spectroscopy, microscopy, and mechanical testing. These methods allow them to examine the structure and properties of metals at a microscopic level, as well as to subject them to various stresses and strains to determine their strength and durability. The metals-testing industry is highly specialized, and requires a high degree of expertise and technical knowledge. Companies in this field must stay up-to-date with the latest advances in materials science and testing technology, and must be able to provide accurate and reliable results to their clients.