What are the names of MPO guide pins and what is MPO guide pin

What are the names of MPO guide pins? The newcomers who entered the industry at the beginning are probably puzzled. Here is an explanation.

In the United States and other foreign countries, it is called MPO Guide PIN, or MTP Guide PIN. After arriving in China, the Chinese call it PIN. Because other industries also have the term PIN, it is usually preceded by MPO or MTP to become MPO PIN or MTP PIN needle, or more Chinese culture, is also called MPO guide needle or MTP guide needle. The MPO guide pin generally contains a clip, which is called a back seat, fixed seat, etc. in China. That is, the guide pin is installed on the clip. In foreign countries, it is generally called PIN Keeper or PIN Holder, which is named after the role of fixing the guide pin.

The above includes almost all the names of MPO guide needles.