... 3.low mould cost 4.mould material aluminum A356 LED lamp cover mouldRotational moulding or Roto Molding which is a high ... suite for producing hollow, one piece parts such as large oil or chemical tanks, kayaks, point of purchase displays, frames, cases ... in application. The products we had developed have Music Box, Oil Box, Toys for Children, Water Tank, Clothes Cart, Cone Barrel ...