We are a factory,all models were created by our R&D team Have own patent of Chess game LK-G860 Quality guarantee game model: LK-G856, LK-G860, LK-G838, LK-G866, LK-G864, LK-G880 This series product suits for adults, including Poker, wheel disk, screen, Tigergame, Casino series, Chess series, Sudoku, Kakuro, Futoshiki and Crossword