PLA Marines Kevlar helmet

M88 PASGT like helmet, i think earlier to QGF-02, maybe a test one.
Missing chinstrap, no markings, only few writings in chinese characters on the shell.

If the writings are original to the helmet, the latter might have been used for ballistic testing.

As seen in post #3, there should have been some additional characters to the left of those in the upper row, which state: "__ type bullet".

The arrow in the bottom row must be pointing at a damaged spot? Evidently the helmet was shot from a distance of "50 meters".

yes you're right, many thanks for the info about the writings!
here's a pic of the damage

Another little detail that points to the writings as being from the period is the way they wrote the word for "meter(s)" - 公尺. In mainland China, most people would have used 米; only those who are as old as Biden and Pelosi today would still fall back to using the older convention from time to time, and those guys would have been in their 50s around the time this helmet was made, just about right to be in charge of running R&D projects like this.

Thank you for the post, and for the fascinating insight into the nuances of language!