1) resistant to heat up to 800celcius degrees,corrosion and scratch
2) have passed FDA, LFGB
3) 350ml and 800ml for the round

1) material : borosilicate glass .          expansion coeffient : 3.8*10-7k;

2) Resistant to heat:  800celcius degrees,    corrosion and scratch.

3) airtight.

4) can be used in microwave oven ,oven ,dish washer and freezer.

5) passed FDA, LFGB and EU84500EEC.

6) totally conform to the regulations set by most of the developed countries.

7) competitive price with first-rate quality.

8) the round container:  350ml and 800ml .