1)once-formed stemware series,
2)hard to rupture,
3)stronger glassware

Once-formed stemware is made by the equipment imported from England.

Its characterisitic is to make the glass parison into the boel,the stem and the bottom in one time by process of sucking,blowing and pulling.

There is no any joint.

The series productions,whose bowls and stems are hard to rupure,and are stronger than stemware.