Should I blog about my manufacturering business?

Yes!  You should utilize the internet by all means necessary to highlight your business.  It will only help you to gain exposure, and someone may be searching online at this moment for a manufactured home especially now that interest rates are lower than before.  Blog (talk) about it!  it's a great way to advertise on the internet.

Yes you should.

You never see that much about manufacturing, even from an operational stand point.

And the benefits to you are great.  Even in terms of exposure for the company, and a greater network of people for business opportunities, you might be able to find dedicated employees or successors as well who have the same passion. 

it would be advantage for your product, write an article for your products that indicates the benefits or even the advantages of that product. it should be a journal not an advertising blog. keep in mind that...

Definitely yes for the following reasons:

1- increase product and company visibility

2- start a 2-way communication channel with your customers/resellers/employees

3- differenciate yourself and your company from the competition

4- give a web 2.0 look & feel to (part of) your company website

5- assess customer inputs and needs

On the other hand, corporate blogging is not so easy when you start from scratch. You should get some help for your "corporate blogging" project. Companies like french www.blogAngels.net can help you define and successfully execute this kind of project.