caution marking recycling other industrial code 7

code recycling consumption material package pet plastic packaging polyurethane polycarbonate polyamide biodegradable polyacrylonitrile bioplastic density polyethylene hdpe ldpe polyolefin triangle conservation ecological reuse reduce bio friendly care sign pictogram eco infographic icon symbol marking product environment environmental label arrow pollution waste identification number industrial vector stroke outline green caution notice products marking recycle types plastic informing consumer properties chemical triangular sign