Bulky than the heavy box, and needs set lever. Lever rod should use scalable, flexible, scalable and convenient. Pulley shaft separate product selection. Rotating flexible, mobile and convenient. When we received the custom-made trolley product can be determined rod superiority and inferiority .1 by the following two points, Beijing aluminum box manufacturers, hand lever repeatedly pull more excellent stretch observe whether light, flexible .2, aluminum boxes, on the road to carry out housing Drag, watching the movement speed, and whether there is abnormal noise and friction. inferior rod, pull slowly, moving slowly. Quality trolley, easy to move fast, rod good scalability. With the continuous development of technology, luggage industry sectors also continue expand, more and more areas that require high-end bags in use and transportation needs more high-end technologies and measures. And so on our traditional wooden or metal box product poor mobility, performance is not high, not environmental protection shortcomings also been unable to meet the people on the luggage carrier of the modern requirements, for example Xiongxian plastic carrying case CATIC factory production of precision equipment boxes, two processes external structure, internal structure of the internal structure, mainly based on placement instruments and equipment size for processing. In order to ensure dimensional precision, dimensional drawings made of CAD software. precision instruments me the appearance of fine, medical aluminum boxes custom-made boxes of medical equipment, the atmosphere, the interior layout is reasonable, size precision.