Exhibit Introduction
01Thermal desorption apparatus

AutoTDS-VProThe Type fully automatic thermal desorption instrument is a 24 bit low-temperature secondary fully automatic thermal desorption instrument with electronic flow control (EPC), which has a diversion function and can store multiple operating methods. The gas circuit adopts a combination of electric six way valves and solenoid valves, which can be programmed to automatically complete five processes: dry blowing of 24 adsorption tubes (removing oxygen and water vapor from the sampling tube), primary desorption low-temperature enrichment (optional diversion), secondary desorption, injection, and blowback. The primary desorption temperature, secondary desorption temperature, cold trap temperature, and pipeline heating temperature can be independently set, and synchronous signals can be output during injection to simultaneously start chromatography and workstation.

02 Headspace sampler

THS-45The headspace sampler is a device with45Fully 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.