... Higher hygienic performance. 5. Can be used in oven, microwave, Dishwasher, freezer, refrigerator etc.6. Heat resistance: ... .7. Sharp down temperature tolerance: heat for 10 min. and use temperate water with sharp down ... at -16-_18 degree for 30min.,then with high temperature cotton put into oven at 200degree, ... edge at least 20mm), no break or fissure.10. Chemical stability: Acid tolerance 1.: QB513 (<0 ...