How about Zheng Deyou Bang Auto Elf? Is it worth buying?

How is Zheng Deyou Bang Auto Elf Worth Buying? Can read and clear the code with one button, DPF regeneration reset, action test, induction reset and so on. Shenzhen Zhengde Youbang Technology Co., Ltd., founded on 20 13, is an innovative national high-tech enterprise dedicated to the research and development, production, sales and after-sales service of automobile fault diagnosis, and is a national automobile diagnosis service brand.