Do I need to provide an invitation letter with my business visa application for Japan?

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• I want to apply for a visa for Japan. I also need a visa for China. Which visa should I apply for first?
• Do I need to provide an invitation letter with my business visa application for Japan?
• Do I have to submit my actual green card when applying for a Japan visa?
• Can I apply for a Japan visa in San Francisco if I have a valid visa in my passport? Do I need to provide additional documentation?
• Is The Japan Consulate jurisdictional?
• What is the word Chome referring to on a Japan address?
• When does the Consulate in San Francisco accept the visa processing fee?
• I am going to visit my company’s office in Japan for more than 90 days. Can I apply for a business visa at the Consulate in San Francisco?  
• How do I apply for my Japan Certificate of Eligibility?
• What is a Japan Certificate of Eligibility?