... 3.strict quality control 4.CNC and ODM bumper mould designJieKen mould design,tooling manufacture,injection molding,hardware stamping,product assembly ... sample and studying,make product blueprint,begin to design the mould assembly detail drawing after customer's confirmation,and we ... the existing projects.Many kinds of world-wide applied mould steels are used in our production,such as 738,738H,718, ...