Your PCR should be potentially connected to other PCRs.
We suggest you to reported a sentence like this (reported also in other PCRs):
“In case of production chain, this PCR document can be potentially connected to the following PCR documents:
• PCR Plastic waste and scrap recovery (recycling) services (CPC 8942)
• PCR Plastics in primary forms (CPC 347)
• PCR Textile yarn and thread (CPC 263 & 264)
• PCR Man-made fibres - synthetic (CPC 355)”