Number 4

A triangular recycling symbol or Resin Identification Code made of three arrows with the number three in the middle and the word "PVC" under.

Plastic Number Three Symbol 

The number one preceded by a hash or number symbol, both outlined and tilted.

A folder with a number five symbol inside.

A triangular recycling symbol or Resin Identification Code made of three arrows with the number six in the middle and the word "PS" under.

The number 360 with the degrees symbol in a modern font.

A round icon with a plastic bottle symbol.

A triangular recycling symbol or Resin Identification Code made of three arrows with the number four in the middle and the word "LDPE" under.