POLYPROPYLENE is light material with low moisture absorption, excellent impact strength, strong flexibility and good electrical insulation, non-toxic, tasteless, is one of the most environmentally friendly engineering plastic. Moreover, it could offer significant resistance to any chemical or acid. It's easy to weld. But it's very brittle at low temperature. Food grade Transparent 12 macaron insert plastic trays View More Cheap 20 pcs macaron boxes plastic clamshell packaging View More Wholesale transparent 18 pcs macarons blister trays with lid View More 10 pcs macaron clamshell packaging plastic inert tray box View More Transparent PET 50 macaron plastic clamshell packaging View More 12 slots macaron blister insert blister tray View More Disposable food grade Transparent 48 macaron blister packaging trays View More Food grade transparent clear 35 macaron plastic blister tray with lid View More