Dongguan Zhongyan Machinery Equipment Co., Ltd. (hereinafter referred to as "JOHNY") was established in 2012. It is a professional company that develops and produces single-sided grinding and polishing machines, double-sided grinding and polishing machines, flipping machines and other machinery. Its products are mainly used for ultra-high precision grinding and polishing of materials such as mobile phone glass, phone cases, sapphire, ceramics, stainless steel metal, non-metal, etc. JOHNY provides customers with a complete solution for professional high-precision and ultra-high mirror grinding production systems for flat surfaces. This includes single-sided and double-sided grinding and polishing machines, various grinding discs, skins, grinding fluids, and supporting production processes. Since its establishment, the company has won many new patents issued by the China National Intellectual Property Administration of the People's Republic of China. Such as "a four head flat grinding and polishing machine with drive", "adjustment device for grinding and polishing machine", "upper and lower rail device for flip type grinding and polishing machine", "vacuum grinding and polishing machine", "grinding and polishing machine", "flip type grinding and polishing machine", etc.