Clean World With Hydrogen: Swastika has been used as a Sun Symbol in Persian culture

When I came to Japan, the most interesting thing that I found was very small temples in the streets or alleys that the sign of "Swastika" was on it.
This sign always remind us the Nazi's sign whom ruled Germany before Second World War, because of their vast cruel killing a lot of civil people meanwhile the war and killed many Jewish in the Holocaust.
Firstly I thought maybe it relates to a German soldier who passed away here! But not it is impossible in this case nobody can accept to celebrate this sign for a long time here. After a few days I found more and knew that it belongs to Buddhists temples.
I all of temple they use this sign and this sign also in the maps shows the location of temples.
Then I thought may German borrow it from the Buddhists.Last year when I visited Osaka Museum of history, there was a special exhibition under the name of "Glory of Persia".
More than 200 unique historical relics pre Islamic belonging to the 5th millennium BC to the end of Sassanid dynastic era in 651 AD (Before Arab conquering of Iran) were selected from four Iranian museums to be displayed in exhibition of Glory of Persia in Japan. in 6 selected great cities as Osaka, Tokyo, Nagoya and Sapporo and Fukuoka.To me as an Iranian, visit to the Glory of was a great opportunity to learn about the background of my parent’s country and birthplace, which, until early 20th century, was called Persia. It was very important occasion because also inside Iran we couldn’t see all of these items in a same place.
In that named exhibition I saw a special necklace, with this sign on it! Oh, very strange.
It means Persians use it from about 3000 years ago, as at that time no Buddhist lived at that places and no other reason.
Up to know that it is one of famous sign of Sun for the people in the world. It Is believed that Swastika has been used as Sun symbol with Persian.