Selecting the material is the first step in defining your brand's value. PET (Polyethylene Terephthalate) is the most common choice due to its high transparency, lightweight nature, and excellent shatter resistance, making it ideal for retail shelves. For professional salon lines or eco-conscious brands, HDPE (High-Density Polyethylene) is preferred for its superior chemical resistance and durability against essential oils. If sustainability is a core brand pillar, prioritize suppliers on Made-in-China.com that offer PCR (Post-Consumer Recycled) plastics or biodegradable PLA options to meet global environmental standards.