The shell spinning solution and the core spinning solution are respectively injected into a syringe, and the syringe is connected to a coaxial needle. The needle gauge is 17/22G.
Inject the shell spinning solution and the core spinning solution into a syringe respectively, and connect the syringe to the coaxial needle. The needle size is 17/22G.
Inject shell spinning solution and core spinning solution into syringes respectively, and the syringes are connected to coaxial needles. The needle size is 17/22G.