Features：Thin-walled deep cavity、easily deformed、wall is easily scratched

The product is applicated in water heater products.It's height 305 mm,  sidewall angle is only 3 °, wall is easily scratched. Optimization side smoke and shape of the internal structure, reasonable layout into the gate location and the size and open the valve order, at the same time strengthening the cavities and exhaust structure design, improve cavities and vacuum absorption problems, ensure that the product out of the mold smoothly.