YD is the initials of Yidong. It is the production logo of Qingdao Yidong Coal Mining Machinery Manufacturing Co., Ltd. YD link link, and it is also a registered trademark.

Qingdao Yidong Coal Mining Machinery Manufacturing Co., Ltd. was established in 2004, specializing in the production of mining chain link series products for 20 years. It is one of the earliest manufacturers in China to produce chain link products. YD connecting link is developed, designed and manufactured by Qingdao Yidong Coal Mining Machinery Manufacturing Co., Ltd., and has received unanimous praise from users in coal mine users.

YD serrated chain link

YD curved chain link

YD flat chain link (chain lock type chain link)

YD vertical chain link