... Rotational molding. Material: LLDPE Plastic Feature:Waterproof, Dustproof, Corrosion resistance, and Shocks absorption 1. Rotational molding plastic ... shocks absorption, all sealed waterproof, dustproof and corrosion resistance. Rotationally moulded, reinforced corner and edge designed to resist ... have large , medium ,small cases, and special cases for any instruments. And we could make any box based ...