What is the Christmas tree in coiled tubing operation and what is its English name?

Christmas tree; Production tree;

[Name] X-tree;

[Example] Flanges are widely used in well control equipment such as wellhead devices and Christmas trees for connection.

Flanges are widely used to connect wellhead equipment, Christmas trees and other well control equipment.

The so-called Christmas tree is to build a trunk on the oil well and branch various instruments on it. Oil people used to call this oil production equipment "Christmas tree" vividly. Because the instruments installed on it look like decorations on the Christmas tree, there are not many words for foreigners, so the Christmas tree is used instead.