What do the numbers 1 to 7 on some products mean?

The Municipality of the Holy Capital clarified what is meant by the numbers on water, juice and children’s toys, as part of its awareness campaign, “Your awareness is a trust.”

Number (1) on water and juice boxes indicates that the product is relatively safe (one-time use), and number (2) on milk and children’s toys boxes means safe and recyclable, and number (3) on transparent packaging means toxic and dangerous.

While No. (4) on detergents and children’s toys means that it is relatively safe (other than food), and No. (5) on food boxes means safer, and No. (6) on some food boxes indicates single use, and No. ( 7) Which is on baby bottles means the product is not labeled.