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Quality Control

We take quality management as the focus of company management and customer satisfaction as the company's business purpose to ensure that the quality of each batch of products meets the requirements of customers. We continue to improve every aspect of quality control by strengthening employee training, improving testing technology, and improving testing indicators to improve product quality. The company obtained ISO9001: 2000 quality management system certification.

Each batch of products we issue is accompanied by a detailed quality inspection form, including: batch number, product characteristics, production date, required indicators, actual analysis data and other detailed data.

  

In the quality control system, we use the following testing steps to ensure the quality of each batch of products:

-Intermediate quality inspection

-Product quality inspection

-Product analysis verification

-Retain samples for each batch of products for at least one year

In product quality control, we use the following technologies:

-Chromatography technology (gas chromatography)

-Mass spectrometry (liquid-mass spectrometry)

-Spectral technology (violet / infrared), atomic absorption

-Determination of physical constants

-Content analysis

-Titration (acid titration; alkaline titration; coordination titration; non-aqueous titration; redox titration)

-Mixed test with water

-Determination of evaporation or burning residue

-Determination of non-volatile matter

-Clarity test

-Various chemical reaction tests