... freezing point of GOODNICE is at -23°C(-10°F). After freezed before use, the temperature must rise to room temperature, at ... formula. If productive waterproof leather, you must fix it before or after adding GOODNICE and use it in the proceed of adding ... method, GOODNICE weighted 4-8% of shaved leather is added before, after or simultaneously with fatliquor, not need to change the production ...