The simple answer is yes you can sell your own products on Amazon. The exciting thing is that you already understand manufacturing and building a business so this puts you way ahead of most.
Amazon is an excellent way of entering the USA market rather than going down traditional channels, especially due to online retail sales being at an all-time high. Amazon is the world’s largest online retailer after all.
The Reliable Income course will teach you how to determine which category to place your manufactured products in, especially in relation to the competition, how to market that product through Amazon, how your product should differentiate and making sure it is visual.
What’s important is having a genuinely unique product and that uniqueness is visual (people don't have to read anything to know what's different - they can see it.) This is a key factor on Amazon.
Dependant on the country you manufacture in, some research may have to be done with regards shipping products to the USA. Challenges can revolve around the US dollar conversion and the cost of shipping your goods from your given country to the USA.
You also need to be aware that Amazon has restricted access to some product categories. You should do your own research on this before you commit to buying a particular product for resale on Amazon.
This link may be helpful:
http://www.amazon.com/gp/help/customer/display.html/ref=hp_bc_nav?ie=UTF8&nodeId=200301070