Exhibit Introduction
01Thermal desorption apparatus

AutoTDS-VPro

AutoTDS-VProThe fully automatic thermal desorption instrument is a device with electronic flow control（EPCof24The low-temperature secondary fully automatic thermal desorption instrument has a diversion function and can store multiple operating methods. The air circuit adopts a combination of electric six way valve and solenoid valve, which can be programmed to automatically complete24The five processes of dry blowing (removing oxygen and water vapor from the sampling tube), primary desorption low-temperature enrichment (optional splitting), secondary desorption, injection, and back blowing of the adsorption tube can be independently set for primary desorption temperature, secondary desorption temperature, cold trap temperature, and pipeline heating temperature, and synchronous signals can be output during injection to simultaneously start the chromatography and workstation.

02Fully automatic blowing and capturing device

PTC-VIThe Type Fully Automatic Blowing and Capturing Instrument is a device with116A blowdown trap for automatic sampling systems, suitable for solids or liquidsVOCPre processing. through and withGCorGC-MSThe combination can be widely used in environmental analysis, such as the analysis of organic pollutants in drinking water, wastewater, and soil, and can also be used for volatile compounds in food(Like odor components)Analysis, etc. This instrument complies with《HJ639-2012Determination of volatile organic compounds in water quality by blowing, sweeping, and capturing/gas chromatography-Mass Spectrometry "《HJ686-2014Determination of volatile organic compounds in water quality by blowing, sweeping, and capturing/gas chromatography-Mass Spectrometry "《HJ605-2011Determination of volatile organic compounds in soil and sediment by blow sweep capture/gas chromatography-Standards such as Mass Spectrometry.PTC-VIHas strong water removal ability, effectively reducing water pollutionGC/GC-MSThe impact. Accurate electronic flow control and efficient trap analysis efficiency makePTC-VI has efficient and stable analytical efficiency.

03Headspace Sampler

THS-45The headspace sampler is a device with100Fully automatic headspace sampler for injection system. Widely used in fields such as healthcare, environmental protection, petrochemicals, food industry, pharmaceuticals, etc. This instrument complies with

《HJ 736-2015Determination of volatile halogenated hydrocarbons in soil and sediment Headspace gas chromatography-Mass Spectrometry "《HJ 741-2015Soil and sediment Determination of volatile organic compounds headspace/Gas Chromatography "

《GA/T 842-2019Method for Testing Blood Alcohol Content《HJ 1067-2019water quality Determination of benzene derivatives headspace/Gas Chromatography "《HJ810-2016Determination of volatile organic compounds in water quality by headspace gas chromatography-Standards such as Mass Spectrometry.