Grades of plastic might be depending on polymers which includes natural superior density polyethylene (HDPE) bottle, coloured HDPE bottles, or apparent PET bottle Audits could be combined with compliance monitoring of other waste rules such as, Obligation of Treatment and Transfrontier Shipments of wastes, as well as broader allow compliance. https://material-recycling77542.articlesblogger.com/59473129/what-does-material-recycling-mean