Complex sentence: The ZBD-97, or Type 97, has been in service with the PLA ground forces since 2006, in the armored units of the Guangzhou and Nanjing military regions.
Split into simpler sentences: The ZBD-97, or Type 97, has been in service with the PLA ground forces since 2006. It is also in service with the armored units of the Guangzhou and Nanjing military regions.