The largest warehouse, where copies of expensive brands like Louis Vuitton, Gucci and Coach were stored, is located in Phasi Charoen district’s Khlong Khwang area.
Pol Lt-Colonel Korrawat Panprapakorn, DSI director-general, said the raids were planned after police tracked down the source of fake products.
Police also arrested a Chinese national, who is reportedly married to a Thai woman and ran the business by bringing the products from China to sell online in Thailand.
He was charged with selling counterfeit goods and will be investigated for legal prosecution.