130/140mm stem for standard chinese aero cockpits

[Nickk2000]

Both dengfu and tantan have very similar cockpits for example but i cant find the i tegrated stem option from the picture. Im lokking for the specific stem name/widely available for where to buy it. Every company ive seen only has it in 120mm. Lightcarbon has the same bar/stem setup as shown. If anyone can help track down if theres a 130/140 option id really appreciate it!