andy:

Rotational moulding expert--Fengde Plastic locates Xiangshan,Ningbo, China ,member of Chinese Roto Association.The area of the factory is up to 5000 Square meters,it owns over 100 labors. We devotes in manufacturing the rotational molding. We assemble the product design, the mold manufacture, and the product production . We own high-tech equipments, such as imported CNC, digital miller, electrical sparkle, linear cutting and so on. We have 1 set of full-automatic rotational molding machines in the process center.

Advantages of Rotational Molding
Allows a hollow molding of nearly uniform thickness, no matter how complex the shape
Creates products with virtually no internal stresses
Can produce large molded shells--up to 75" long--with tooling costs of only a few thousand dollars
Gives the flexibility to have more than one material in a part-- when multi-layer extrusion blow molds are not justified
Allows "molded-in" threaded inserts, either on the same plane as the mold parting line or at 90° 
Can manufacture components with a foamed wall structure and a hollow interior
Economically produces small quantities in a variety of colors