PET offers glass-like clarity and is the standard for bubble tea, fruit tea and cold brew. Heat resistance: -40°C to 60°C. Not for hot filling.
PP withstands -20°C to 120°C, works for hot-fill products and microwave-safe lids. Slightly hazy appearance.
HDPE is rigid and chemical-resistant, common for dairy, thick juices and shampoo-style bottles.
For bubble tea shops: PET bottles + PP caps. For hot seasonal drinks: PP cups.