1. High level and high performance. Cylindrical gears generally use carburizing and quenching, grinding teeth, and the load capacity is increased by more than 4 times. The volume is small, the weight is light, the noise is low, the efficiency is high, and the reliability is high. 2, modular design. The basic parameters are prioritized, the dimensions are neat, the parts are versatile and interchangeable, and the series is easy to expand and refurbished, which is good for organizing mass production and reducing costs. 3, the variety of types, variant design. It has got rid of the traditional single base installation method, adding hollow shaft suspension type, floating support base, motor and reducer integrated connection, multi-directional mounting surface and other different types to expand the scope of use. The main factors that promote the level of the reducer are: 1 The theoretical knowledge is getting better and better, and it is closer to the actual (such as gear strength calculation method, shape modification technology, deformation calculation, optimization design method, root smooth transition, new structure, etc.). 2 Using good materials, various high-quality alloy steel forgings are generally used, and the quality control level of materials and heat treatment is improved. 3 structural design is more reasonable. 4 processing accuracy increased to ISO5-6. 5 bearing quality and life expectancy. 6 The quality of lubricating oil is improved. Modern bedroom layout advocates simplicity, multi-functional furniture has become more and more the public 's choice, in order to meet the occasional visitors' living needs, a multi-function Sofa Bed is very necessary. Usually, multifunctional Sofa bed can be placed in the sitting room or study, act as a seat function; the guest comes in the evening, spread multifunctional sofa bed, spread bedding is a sleeping bed. Multi-functional sand is not only used for home life, in the current room, meeting room, lounge, multi-functional sofa bed are also useful. In the fatigue, shift interval, overtime after the working pay groups, let go of the multi-functional sofa bed to take a rest. Multi-functional sofa bed can also choose leather fabric, so that you can save space at the same time, but also bring users and visitors solemn, capable, dignified feeling, so more suitable for business talks, daily negotiations and other business activities. The sofa metal frame structure replaces the traditional fixed frame structure, which is generally commonly known as the iron frame. The iron frame can be moved according to the design angle and displacement, so as to realize the overall posture of the sofa from sitting posture to lying posture. There are a variety of holes on the iron frame to fix the sofa wooden frame. Multifunctional Sofa Bunk Bed,Multifunctional Foldable Sofa Bed,Multi Function Sofa Bed,Multifunctional Folding Sofa FOSHAN CITY LESHUN RONGHUI FURNITURE CO.LTD , https://www.ronghuifurniture.com