Ua hoʻokumu ʻia ʻo Bohui Machinery i ka makahiki 1976 me R&D, hana a kūʻai aku i nā kaʻa ahi.He hale hana i koho ʻia no ka hana ʻana i nā kaʻa ahi ma waena a me nā ʻāpana hema i hoʻopukapuka ʻia a kūkulu ʻia e China Ministry of Public Security i nā makahiki mua.
Ua hana mākou i ka hana kaʻa kaua ahi no nā makahiki he 40 me ka nui o ka ʻike a me nā kumuwaiwai.