Hunachengbei Market in Shenzhen, a small city with dozens of electronics malls. Computer components, cell phones and accessories, printers and scanners, surveillance cameras, speakers, LEDs, and much more. Just in this market you can find a good supplier for Intel and AMD processors, video cards Asus, Colorful, Gigabyte, MSI. You can buy new and used laptops, a good copy of headphones or watches known brands.
The market is divided into several shopping centers.

Tong Tian Di Telecommunication Market is one of the largest shopping centers for the sale of components for cell phones. Here you can assemble your own smartphone, as there is everything you need: screens, cases, batteries, various microchips, front cameras, and spare parts for the phone.

Feiyang Times Mansion is a shopping center for used phones, phones after repairs. Here you can buy an iPhone 14 in excellent condition, or any of the latest flagships.

Electronic Science and Technology Mansion - The market sells chargers and power banks, drives, portable bluetooth speakers, computer cases.

The Saige Market is the most famous. The building itself has 70 floors. Here you can buy motherboards, graphics cards, processors, SSD drives, mice, keyboards, headphones, displays, computer cases and much more.