Sega Logistics Service
From Sega Retro
Sega Logistics Service (セガ・ロジスティクスサービス), or SLS, are a company within Sega which deal with the maintenance and distribution of Sega hardware within Japan. It mainly specialises in arcade hardware and technology of that nature, but it was also responsible for the creation of various joypads, including Sega of Japan's various PlayStation 2 joypads and the PlaySEGA USB joypads.
Their UK counterpart is Sega Total Solutions.