[1] The TEL is steerable on its first 3 and last 3 axles, which significantly reduces turning radius and makes it surprisingly maneuverable despite its size.

UN and Asean investigators have concluded that Chinese WS51200 trucks were legitimately exported to North Korea for timber transport, with the sales contract specifically prohibiting use of the vehicles for military purposes.

However, North Korea illegally converted them into TELs by installing hydraulic gear and controls to erect a missile.

Despite being converted to fire a missile, the truck would not be likely to survive damage from the rocket exhaust like a purpose-built TEL, making it a single-use launcher.

[3] [4] Despite this evidence, in 2017 the United States Treasury sanctioned Wanshan Special Vehicle, accusing the company of deliberately proliferating of weapons of mass destruction by aiding North Korea's mobile ballistic missile capability, but kept silent about their American Cummins engines.