Not reliable. The mobile phones of e-commerce selling gold ornaments in A Auto Fast are not made by regular manufacturers, but by refurbished machines and assemblers. Aauto Quicker platform is not as big as JD.COM platform and Taobao Tmall shopping platform, but the mobile phones sold are cheaper than the two largest e-commerce platforms in China, indicating that the purchase channels are different. Only refurbished machines and assemblers are cheap, so it is faster and unreliable for e-commerce selling gold jewelry to engage in activities to sell mobile phones in Aauto.