기능

• The lid has grooves to prevent small items from falling apart in the case.
• Polypropylene (PP): Similar to polyethylene on the outside, but stiffest and tightest. It also features a specific gravity of 0.9~0.92, which is the lightest among general-purpose plastics. The heat resistance is high, about 110°C. It is also highly insulating and resistant to chemicals.