Takeaway paper boxes are generally safe for customers when they meet specific standards and regulations. Here are some key factors that contribute to their safety:

1. **Food-Grade Material**: The paper used for takeaway boxes should be food-grade, meaning it is free from harmful chemicals and safe for direct contact with food. This ensures that no toxic substances leach into the food.

2. **Coatings and Linings**: Many takeaway boxes have a coating or lining to make them grease-proof and moisture-resistant. These coatings should also be food-safe, meaning they do not release harmful chemicals into the food. Common coatings include polyethylene (PE) or polylactic acid (PLA), which are considered safe for food contact.

3. **Durability**: The boxes should be strong enough to hold the food without breaking or leaking. This ensures that the food remains clean and safe during transport.

4. **Temperature Resistance**: The material should be able to withstand the temperature of the food being served. Hot foods should not cause the box to break down or release harmful substances. Some boxes are specifically designed to handle hot foods and are labeled accordingly.

5. **Regulatory Compliance**: Manufacturers should comply with local and international food safety standards, such as those set by the FDA, European Food Safety Authority (EFSA), or other relevant authorities. Certifications and labels indicating compliance with these standards provide assurance of the product's safety.

6. **Biodegradability and Environmental Impact**: Many takeaway paper boxes are designed to be biodegradable or compostable, which not only makes them environmentally friendly but also ensures that they do not contain harmful chemicals.

When purchasing takeaway paper boxes, it's important to check for certifications or labels indicating that the boxes are food-safe and environmentally friendly. Reputable manufacturers will provide information about their compliance with safety standards, giving you confidence in the product's safety for customers.