... mould and blowing mould .2.various inserts : the rotational mould can be assembled various inserts.3.complex shape : ... closed space.5.hollow but strong and seamless : the rotational moulded product is the hollow product , but can ... moulds. itemmaterialOEM plastic fender board mouldAluminium mould, casting mould,rotomolding,rotational mouldOEM manufacuturer ,custom design available , new design mould , ...