Business to business networking isn’t often associated with Facebook, but I think it can be a great way to connect. When you log in as you business page, you can interact with other Facebook Pages on behalf of your business.
I wish the Facebook Pages apps for iOS and Android would enable Facebook Pages to interact with each other as this video demonstrated on a computer. Until then, make it part of your routine to operate on behalf of your Facebook Page for a few minutes daily. It will increase your visibility across other Facebook pages and connect with new audiences while providing value to the other pages readers.