Looking primarily for a list of (INCLUDING WEBSITES) OF Original
Equipment Manufacturers (also secondary market manufacturers would
also be helpful) in North America of agricultural equipment manufacturers- 
specifically: cutting edges, agricultural discs (also called harrow
discs), shovel loader buckets, and end bits. Larger players include
companies such as Caterpillar. If possible, would like contact
names/addressess, company size, web page address and email addresses. 
Looking for any information on companies currently importing these
items from outstide the US and any trends on outsourcing this
manufacturing to third party providers.