... cost 4.mould material aluminum A356 waterproof ball and shine led ball with shell by rotational mould Rotational moulding or Roto ... products can be produced fully closed.6)Rotational moulding products can be filled with foam material, to achieve thermal insulation ... Box, Oil Box, Toys for Children, Water Tank, Clothes Cart, Cone Barrel, Dividing road cone and barrier, Housing of Blowing machine and ...