FPI AQMS-650 measures NH₃ in the ambient air, which delivers a stable and precise value. It adopts chemiluminescence technology with an external converter that can combine its use with AQMS-600 measuring NOx; during the measurement, NH₃ will be converted into NO by oxidation. And it also comes with its own developed software. The remote PC software allows for a remote connection with a virtual interface and data downloading capability to operate the software.

FPI AQMS-500 sulfur dioxide (SO₂) analyzer applies UV fluorescence technology with the photomultiplier tube (PMT) to measure SO₂.

FPI AQMS-600 nitrogen oxides (NO-NO2–NOx) analyzer utilizes chemiluminescence technology indicated by US EPA as the federal reference method for monitoring multiple forms of nitrogen oxides.

PMS-200M accepts closed-loop response control technology to sample multiple gaseous and particulate samples simultaneously in the atmosphere. It can monitor meteorological parameters such as atmospheric humidity, pressure, temperature and wind speed in real time.

AQMS-700 CAPS NO₂ analyzer is an atmospheric environment monitoring instrument based on the optical cavity attenuation phase shift technology (CAPS) which can directly measure the NO₂ concentration in the ambient air and is widely used in the online monitoring of the NO₂ content in the ambient air quality monitoring scene.