What are the top ten optical module brands in China?

The top ten are mainly some equipment manufacturers, such as Huawei, H3C, Finisar, Fiberhome and Ristar. In addition, in recent years, as the foundry of Huawei H3C, Beiyitong has developed very well, and their products are exported to foreign countries, the United States and the European Union. However, if there are more advantageous manufacturers, I think the products of BET /F-tone network have longer service life, guaranteed quality and high cost performance.