YELLOW STONE CORP. major in Production of LED (Light-Emitting Diode), we have the strongest R&D team, the latest automation equipment, flexible and efficietn management system and ISO9001 strict quality control, all processes have been imported fully computerized operations. The company´s products are now fast and smooth marketing flow worldwide shipments to Taiwan. In Taiwan we hvae more than 1000 customers in long-term use of the company´s products.