Introduction: PERKINELMER is the world's largest manufacturer of analytical instruments, consisting of scientists dedicated to product development, marketing personnel providing technical support and sales services to customers, and business professionals. Since its establishment in 1937, we have continuously provided users with the world's most advanced instruments, technologies, and services in the field of analytical chemistry. PERKINELMER produces a variety of chemical analysis instruments, including atomic absorption spectrometers, plasma emission spectrometers, plasma mass spectrometers, Fourier transform infrared spectrometers, near-infrared Fourier transform Raman spectrometers, Fourier transform near-infrared spectrometers, ultraviolet/visible/near-infrared spectrometers, polarimeters, fluorescence/phosphorescence/luminescence spectrometers, multi plate fluorescence/ultraviolet high-efficiency analyzers, thermal analyzers, elemental analyzers, ultra micro electronic balances, gas chromatographs, headspace samplers, automatic thermal desorption instruments, gas chromatography-mass spectrometers, engineering gas chromatographs, portable and micro gas chromatographs, liquid chromatographs, and other analytical instruments, as well as GC-FFTIR, TGA-FTIR, HGA-ICP-MS, GC-MS and other combination instruments.