... ,-20 to 120 degree,acid,oil resistant,FDA,ISO disposable tableware, including disposable compartment trays, lunch containers, cups, bowls, plates, ... cutleries, etc. 1. They are made of corn starch, biodegradable and compostable. 2. 100% natural and environmentally ... , nontoxic, harmless and sanitary.4. Within a temperature range of -20 to 120 degree centigrade.5. Can be used for ...