Electric Cars: What type of truck would be the best type of truck to be built as an EV?

First I would make a list of EV pros and cons. That list will tell us the "shoe size", so to speak.  Then we just have to find the "foot" (trucking application) that fits!

PROS
-  Electric motors have tremendous torque, which is good for moving extreme weight from a dead stop.  That's why trains are diesel / electric; diesel fueled generators, which power electric motors.  Come to think of it, diesel engines have lots of torque, so any diesel powered truck would naturally be good candidate for turning into an EV.

-  Lower maintenance costs due to fewer parts.

CONS
-  Limited charging stations.  Limited charging stations rules out long haul, cross country trucking.  In other words, local trucking would be better suited as EVs, because they can return home to recharge overnight.

So, the question is, what trucks today require lots of torque to move heavy loads and normally return to their base at the end of the day.  At first blush, it seems cement trucks fit that description.  But spinning that huge drum full of heavy cement would suck up a lot of electricity quickly, so that might be better off being rotated by a small diesel engine.

Local package delivery trucks might benefit from becoming EVs, because they return to their office at the end of the day.  I believe the current fleet of UPS / FedEx / DHL trucks are using gas powered engines.   That means torque is not such a requirement for their application.  However, they would benefit from lower maintenance and fuel costs.
Yuchai engine is one of famous brand of China diesel engine .