What is the fine-grained topic of the following text: Shenzhen Cestpc Electronic Co. Model ischipset model is Shenzhen Liyang Welding Equipment Co.
Before we list an item we power test it if it requires power, if it is a motherboard we xti it while in the system before dismantling, if it is a peripheral device that we can test on or in a system we do. Only return the topic.
Testing and verification of electronics equipment from Shenzhen companies.