Noun and の adjective
ぼうはん
本日参りました理由は、当社の最新防犯グッズをご紹介するためです。
The reason I’m here today is to introduce our latest crime prevention products.
To prevent crime is a good thing. To do this you use crime prevention techniques.
This is a jukugo word, which usually means on'yomi readings from the kanji. If you know the readings of your kanji you'll know how to read this as well.