A glass vase bombing

In this one week, my house bombed two glass cylinder vase, which is why «how to prevent« Please know this, thank you! Blast from the bottom two are, relatively-fracture, no temperature, no * Change, has not encountered it, one has spent about six months, another bought a few days. Glass vase why they would bomb »true Engage in do not understand

Your vases may be used several calcined material from the due process design unreasonable, vases internal stress imbalance, accumulated to a certain extent after the rupture caused.