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Due to the repeated use of syringes bring harm to people's health and life,and resist the reuse of syringes has become a consensus of the people.This changed the front-end syringes structure and design of four thorn in the syringes,after the completion of medicine injection,the front-end stabbed broken and syringes cannot be repeated use.
Chao Hu Yang Chen Wenjuan Wei Qian Jiang