Wuhan Zhongchang Guoyan Biao Technology Co., Ltd. (www.zybiaowu. com)majorWe provide various standard substances, standard samples, standard solutions, standard gases, imported standard products, reference materials, chemical reagents, customized mixed standards, laboratory consumables, etc. The company's products involve many fields such as domestic quality inspection, agricultural inspection, metrology, drug supervision, water quality, biology, medical, health, environmental protection, etc.Carrying major domestic standard substance research institutes (such as *, China National Institute of Quality Supervision, Inspection and Quarantine, Ministry of Environmental Protection, Institute of Physical and Chemical Exploration, China National Chemical Research Institute, *, 53 Institute, China National Nuclear Corporation, Institute of Coal Science, Marine Environment, China Center for Disease Control and Environmental Monitoring, Institute of Standard Substances, etc.), importing standard substance research institutions (agent brands such as Cato, Aladdin, etc.) TCI、Acros、Sigma、 McLean, Merck, etc. provide one-stop standard substance procurement services.*Supply and major distributorsUniversity laboratoriesThird party experimental testing institutionsResearch institutesGeological and Mineral Research InstitutionsFood and drug supervision system, environmental monitoring stations in various provinces and cities, entry and exit quarantine inspection system, etc.