Many Shenzhen technology companies that have taken the lead in overseas markets are increasing their efforts in the Chinese market and have brought their new products customized specifically for the domestic market to the 22nd China Hi-tech Fair (CHTF), currently underway in Shenzhen until Nov 15.

Aftershokz, whose headphones rank among the top three in Amazon's sports headphones category, is one of the companies at the fair.

The principle behind the headphones manufactured by Shenzhen Aftershokz Technology Co is to transmit sound into the ear through the vibration of the skull, without having to insert the earphone into the ear canal or cover the entire ear. The product has been described by many foreign publications, including Forbes, as "the safest running equipment you can buy."

"We have launched earphones specifically for the Chinese market with simplifications and upgrades, hoping to improve sales in China," said an employee of the company.

Timekettle Translator Earbuds has also made its presence felt at the fair. The product is popular in the United States, Japan, and South Korea. Tian Li, founder of Timekettle Technologies, said that translation needs in China are more in business scenarios, so the company has adjusted products to make it more suitable for Chinese consumers.