With the continuous development of 5G, the optical module market will usher in a stage of rapid development. On the one hand, according to the technical architecture of 5G, the construction method of 5G network will be different from that of 4G, and the demand for main equipment and transmission equipment will increase. As an important component of optoelectronic signal conversion, optical modules will not only increase in demand in 5G, but also increase in transmission rates, which will increase the performance requirements of optical modules. On the other hand, with the explosion of data traffic, the market demand for cloud computing has increased, and the rapid development of cloud computing business has led to an increase in the number of data center construction. Optical modules, as the main components of data centers, benefit from the next-generation rate and various new technology upgrades.

　　1. Looking at the warranty period, the warranty period of the original optical module of the general brand is 1 year, and the warranty time of the compatible optical module is more than 3 years.

　　2. In view of the compatibility of optical modules, many optical module manufacturers do not have many models of branded switches, resulting in the fact that the factory-made optical modules cannot be tested for compatibility with real devices. In order to ensure the normal operation of optical modules in switches of various brands, ETU-LINK professional optical module manufacturers will 100% test the compatibility of optical modules through real machines before leaving the factory.

　　3. For the quality of the optical module, it is difficult for us to see from the appearance. It can only be run on the machine for a period of time to see its operating status and then evaluate the quality of the manufacturer. Therefore, the quality assessment for the optical module manufacturer is a For a relatively long process, we might as well test several products that are compatible with optical modules, and select the most cost-effective supplier of compatible optical modules through comparison.

　　4. When purchasing optical modules, pre-sales and after-sales service are very important. We can indirectly reflect the professional level of this company according to the professional level of its sales when we connect with the manufacturer for sales. When purchasing optical modules, it is not only about price, but also about product-related knowledge. Optical modules are not fast-moving consumer goods, so they need to be carefully considered when purchasing, and subsequent problems will be very troublesome, so be sure to consult clearly before selling.