四方达：公司是国内设备规模优势明显的CVD金刚石厂商 具备纳米金刚石涂层技术 暂未涉及电极相关业务

Group 1 - The company has a significant scale advantage in CVD diamond manufacturing in China and possesses nanodiamond coating technology [2] - The company currently does not engage in electrode-related business but is open to exploring more business opportunities based on its operational needs and development requirements in the future [2]