Features of rotomolding: 1) Low cost of the molds: To the same products, the cost of rotomolding is just 1/3--1/4 time of the cost of blowmolding and injectional molding. 2) Good intensity of the edge: The thickness of rotomolding products' edge can surpass 5 millimeters, which can solve the problem of spatial products. 3) Easy to place other insert parts. 4) Offer complex shape of the products with 5 millimeters as its thickness. 5) Manufature completely sealed products