Allergenic additives that should be indicated on the menu include common allergens such as peanuts, tree nuts, milk, eggs, soy, wheat, fish, and shellfish. These allergens are known to cause severe allergic reactions in some individuals, so it is important to clearly indicate their presence in menu items. Additionally, any other less common allergenic additives that may be present in the dishes should also be clearly listed on the menu to ensure the safety of customers with food allergies. **

No, allergenic substances can be found in various products and materials, not just face masks. Allergens can be present in foods, medications, cosmetics, cleaning products, and even in the environment. People can develop allergic reactions to a wide range of substances, so it is important to be aware of potential allergens in all aspects of daily life, not just in face masks. **

No, a specific allergenic substance is not only contained in face masks. Allergenic substances can be found in a variety of products and materials, including certain foods, medications, cosmetics, and household items. People can have allergic reactions to a wide range of substances, so it's important to be aware of potential allergens in all aspects of daily life, not just in face masks. **

The shipping costs for postal delivery can vary depending on the weight of the package, the destination, and the shipping speed selected. Generally, postal services offer different pricing options such as standard, expedited, and express shipping, each with its own associated costs. Additionally, some postal services may offer flat-rate shipping options for certain package sizes. It's best to check with the specific postal service or shipping provider for accurate pricing information based on your specific shipping needs. **

Delivery of non-defective goods means that the products or items being delivered are in good working condition and free from any defects or damage. This ensures that the goods meet the quality standards and specifications agreed upon between the buyer and seller. It also implies that the goods are safe for use and will perform as intended. In the event that the goods are found to be defective upon delivery, the seller is typically responsible for replacing or repairing the items. **

Sulfur hexafluoride (SF6) is heavier than air, non-toxic, non-radioactive, and non-flammable. It is commonly used as an insulating gas in high-voltage electrical equipment and as a tracer gas for studying airflow patterns in buildings. SF6 is also used in the production of magnesium and aluminum, and as a cover gas in the metal industry. **

Amazon Logistics is a delivery service operated by Amazon that handles the shipping and delivery of packages directly to customers. It is a part of Amazon's efforts to improve their delivery capabilities and provide faster and more reliable shipping options. Amazon Logistics utilizes a combination of Amazon's own delivery network, as well as third-party carriers, to ensure efficient and timely delivery of packages to customers. This service allows Amazon to have more control over the shipping process and provide a better overall customer experience. **

In general, there may be some leniency for the non-delivery of a package depending on the specific circumstances. If the package was lost or delayed due to factors beyond the control of the sender or the delivery service, such as extreme weather conditions or logistical issues, there may be some understanding. However, it is important to communicate with the sender or the delivery service as soon as possible to address the situation and explore possible solutions. Ultimately, the resolution will depend on the policies of the sender and the delivery service involved. **