SGE used materials or substances that are recyclable can be recycled :
recyclable cardboard packaging
recyclable cardboard packaging —recyclable noun [countable usually plural] American English
WORD FOCUS: environment 
good for the environment: environmentally friendly, eco-friendly, sustainable, recyclable, biodegradable, renewable, organic
people who want to protect the environment: greens, eco-warriors
things that cause harm to the environment: pollution, greenhouse gases, global warming, acid rain, deforestationenvironment
➔ See also environment

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