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Keratin is the main component of human hair, about 97%. When a person takes drugs, the narcotics wil..
During drug scenes, suspects do not cooperate with tests, making it difficult for police to obtain b..
GA500BT hair trace drug detection system is an automatic immunofluorescence detection system ba..
Hair faithfully records what happened in the body. In other words, as long as the hair is long ..
During a drug scene, suspects do not cooperate, making it difficult for police to obtain body fluids..
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