Actually the company e-Blue has their
website registered under a Japanese domain but only has Chinese and English websites
Also, their contact page says:
"Pilot Electronic (Hong Kong) Limited
Email:
inquirypro@e-blue.jp
Address: Unit 3-7, 15/F., Favor Industrial Centre, 2-6 Kin Hong Street, Kwai Chung, N.T. Hong Kong."
I don't really expect this product to be Japanese, and I really wonder why they use a .jp and not a .hk domain if they don't even have Japanese-language websites. Extra coolness maybe?
My guess would be: Made in Taiwan by Ritek. Anything else would be a real surprise.