Since the successful synthesis of PCBN by the former Soviet Union in 1960, the former Soviet Union has become the first country in the world to successfully apply CBN materials to metal cutting tools; In 1972, at the Moscow exhibition, cubic boron nitride sintered body turning tools with a diameter of 12mm were exhibited. In the mid-1970s, General Motors of the United States produced CBN blades by combining metal binders and CBN particles, and the product has been serialized. In 1975, Japan introduced the technology of GE from the United States and quickly developed its own products. Many companies around the world are producing PCBN blades, including Sumitomo Electric, Mitsubishi Metals, Toshiba Loyi, Fujitsu, and Hitachi Hard Alloy. The DeBears company in the UK is currently the world's largest diamond product base. The company began launching the PCBN material Amborite without a substrate in the early 1980s, with a new classification of 12 specifications including ASFR, ASFL, and ASFC. In addition, countries such as Sweden, Germany, and Ireland can also produce PCBN tool materials in the world. In the past 30 years, the sales of PCBN cutting tools in foreign markets have increased by 10% annually, making it one of the few products in the world that can maintain high growth rates for several years After China synthesized CBN samples in 1967, the Sichuan Cubic Boron Nitride Collaboration Group developed China's cubic boron nitride cutting tools in November 1973 using their own synthesized CBN single crystals as raw materials, with a diameter of approximately 205 to approximately 4.0mm. From 1978 to 1980, Chengdu Tool Research Institute successfully developed the cubic boron nitride composite blade series. In 1983, Guiyang Sixth Grinding Wheel Factory successfully developed PCBN tool materials and launched DLS-F series PCBN tool products. In 1982, Guilin Institute of Mineral Geology successfully researched PCBN tool materials and launched LBN-Y brand PCBN tool products in 1985. The Zhengzhou Abrasive Grinding Research Institute successfully researched PCBN tool material in 1987. After entering the 1990s, some well-known diamond tool industry enterprises in China have also successively developed PCBN tool materials