The plastic identification codes 1 through 7 (the triangle symbol with a number) classify plastics by polymer type for sorting purposes — they do not guarantee an item is recyclable. Code 1 is PET, Code 2 is HDPE, Code 3 is PVC, Code 4 is LDPE, Code 5 is PP, Code 6 is PS, Code 7 is “Other” (mixed or specialty plastics). For Gee Hoe Seng’s industrial collection, we focus on bulk single-material loads of HDPE, PE film, PS, and specialty industrial plastics like FOUP and FOSB. Code 3 (PVC) is not accepted.