Your question involves a research project and you will have to do it on your own time. You could start with a map and then do an internet search for each city and town looking for real estate agencies. Keep a large pad and pen handy.
I found a list of over 40 insurance companies based in Texas including State Farm, Allstate, Texas Farmers, Nationwide, Chub Lloyd and Texas Farm bureau
The real estate rental services that deal with Spanish villa rentals are located in Spain, since many real estate companies are based on location instead of property type.
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Capmark represent real estate financial investments. They manage business and commercial real estate in North America. They are based in Pennsylvania.
The Newmark homes construction company is based out of Michigan, Texas, Kansas and North Carolina. The majority of Newmark homes construction offices are located in Texas.
Health America is located of course, in, America. The specific state that it is based out of is North Dakota. This is where the companies head offices are located.
They can be found. Stevens Transport is based in Texas, as are several other companies, there's freight moving between Mexico and the US via Texas, there's oilfield work, etc.
Edina Realty is a real estate company based in Minnesota. The company, who is owned by HomeServices of America, Inc., also operates other real estate companies in western Wisconsin, in addition to Minnesota.
Adams has several companies that make shafts for them.
Cost accounting systems such as activity-based costing (ABC) systems are used primarily in manufacturing environments, but increasingly are being applied to service companies, such as banks, real estate firms, and insurance companies.
The webmaster and designers at heritageWebDesign.com are probably who you are looking for. Austin Web Design will be able to help you as well, thier address is www.austinwebdesign.com/. There are many web design companies in Texas. Triton.net is based in Michigan but works with companies throughout the US.
Loblaw Companies are based in Canada