You will be given a definition of a task first, then some input of the task.
Given a context passage, generate a question from the passage such that its answer is shortest continous span from the passage.

The PLZ-45 or Type 88 is a 155 mm self-propelled howitzer designed by Su Zhezi of 674 Factory, and developed by Norinco, 123 Factory (Heilongjiang Hua'an Industry Group Company), 127 Factory (Tsitsihar Heping Machine Shop), 674 Factory (Harbin First Machine Manufacture Limited Company) and Beijing Institute of Technology in the early 1990s for the export market.
Output:
Which company manufactured PLZ-45?