Do you mean medical syringes?
If so, the answer is:
In 1950s and 1960s, western missionaries began to enter China in large numbers.
In order to preach, some of them learn western medicine knowledge in advance and attract people to teach by providing medical services for the people.
It was they who brought western medical instruments such as syringes.
Early syringes were not made of glass, but of metal. Glass syringes were introduced to China in 1970s from 65438 to 2009, which were also brought by missionaries.