The degradation time can be controlled according to customer needs, and the controllable range can reach more than two years to never degrade.
Eco-friendly board - gray
Eco-friendly board - blue
Eco-friendly board - dark gray
Eco-friendly board - yellow
Protect from light
Step 1: Raw material extraction
Step 2: Grind into calcium carbonate splits
Step 3: Add graphene and other materials
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