Sihuan Armor Industry Co., Ltd. of Jiangyou City is the light armor subject group and is also the bulletproof equipment manufactory factory, ratified by the china ministry of public security.

• 江油市四环装甲公司是军工钢生产基地的轻型装甲课题组，又是中国公安部批准的防弹装备制造工厂。