Yan Yin

Part of Zhenjiang Coking & Gas Group Co., Ltd., Jiangsu Surun High Carbon Co. Ltd. is a Chinese company that manufactures and distributes coke products.

Shanghai Hongzi Enterprise Development Co., Ltd. engages in the provision of enterprise consulting service. Its business scope includes technology development and transfer, technical consultation and services of electronics and communication products; computer system integration; investment management;, asset management; business management consulting; investment consulting; business information consulting; cleaning services; e-commerce; computer network engineering; warehousing services; freight forwarding; loading and unloading services; sale of electromechanical equipment, hardware, electricity, wire and cable, audio equipment, building materials, metal materials and products, edible agricultural products, computer hardware and software and auxiliary equipment, communication equipment, and auto parts; and engaged in the import and export business of goods and technology. The company was founded on October 28, 2015 and is headquartered in Shanghai, China.

Shanghai Guanfeng Information Technology Co., Ltd. engages in the production and sales of communication circuit boards. The company was founded on April 19, 2018 and is headquartered in Shanghai, China.