How to prepare a group of needles 。10 needles ·5of1 cun needles ·4of1.5 cun needles ·1of3 cun needles ·All of them are No.30How to prepare a group of needles • 10 needles • 5 of 1 cun needles • 4 of 1.5cun needles • 1 of 3 cun needles • All of them are No.30