Aijiren has 20 years of experience in producing COD Test Tubes. As a senior manufacturer of chromatographic consumables, Aijiren needs to strictly control the products. Only by controlling the quality of the products can customers have a good experience and trust Aijiren. , Choose Aijiren. In order to ensure product quality, Aijiren often conducts product quality testing and application experiments in the factory’s internal laboratory, which is a good help for the development of Aijiren’s products.