It is wise to avoid constantly expressing your own opinion about things. Japanese society is very group-oriented. Loyalty to the group and to your superiors takes precedence over personal feelings. Never do anything to embarrass a Japanese. For example, do not critisize someone in front of others.
Outward style is very important in Japan.
Gifts are carefully wrapped, food is displayed artfully, and so forth. Customary business practices The only acceptable way to approach a Japanese firm is by introduction from a third party, preferably someone who knows you, your background, your company, and the Japanese company with which you want to deal. This introduction could be either via letter or in person. Always dress in conservative business suits and ties. Businesswomen should use make-up, perfume and jewelry sparingly.