Diamond (English: Diamond) is also known as diamond. It is made of natural diamond and synthetic diamond. It is the hardest substance in the world. It not only has the characteristics of high hardness, wear resistance, good thermal stability, but also has excellent physical properties such as compressive strength, heat dissipation rate, sound transmission rate, current resistance, corrosion resistance, light transmission and low thermal expansion. A new material that is irreplaceable in industrial applications, a treasure of modern industry and science and technology.

The diamond industry is a new industry in the world. In 1957, the United States GE began industrial production of synthetic diamond. In China, Professor Wang Guangzu successfully developed the first diamond crystal on December 6, 1963, and began industrial production in the 1970s. Since the reform and opening up, the diamond industry has developed rapidly.

Experts say that synthetic diamond is a high-tech of ultra-high pressure and high-temperature synthesis. Its synthetic equipment is a two-side press machine with the annual ring mold as the core represented by General Electric Company (GE) in Russia. The two-sided top press is used. In China, due to the relative backwardness of the metal materials industry, the synthesis of synthetic diamonds has to be carried out with the “ant sacral bone” type of six-face top technology, but the medium and high grade diamonds are not produced. come out.

In this regard, Huanghe Industrial Group Corporation and then Chairman Qiao Jinling were deeply touched. As early as 1988, the company started the large-scale production of diamonds from several 6×800 tons presses purchased from Zhangjiakou Prospecting Machinery General Factory. However, the grade of diamond produced is very low. In the international market, diamonds of this grade can only sell for 6 cents per carat, while diamond grinding blocks produced by the Yellow River Group and later developed diamond tools such as cutting. The required import price for medium to high grade diamonds is as high as $1.2 per carat! In the year of 1995 and 1996, although China's diamond production reached 400 million carats per year, the output is the world's number one, but it is unable to become a world power of superhard materials because of its low grade. The backwardness of diamond synthesis equipment has become the bottleneck of our country's superhard material industry.

As the variety and output of diamond products of the Yellow River Company become larger and larger, the amount of high-grade diamond required is also increasing. A more ambitious concept is to develop a new press and enter the world in five or six years. The top three goals of superhard materials were raised in early 1994.

On May 11, 1994, Qiao Jinling led the relevant technicians to go to the United States General Electric Company (GE), which was the world's number one in the superhard materials industry at the time, to see for themselves the largest and most technologically advanced in the world. The two-face press and its production process, and want to obtain the production technology of the two-side press. However, this visit was not pleasant, and even brought him a shame!

The thing is this: Just on the day of Qiao Jinling’s visit, a president of South Korea’s ILJin company also came to GE. GE’s Superhard Materials Department is the president of the Korean company and hangs in front of its office building. I got a South Korean flag and was met by the president of the department. When the Qiao Jinling and his party arrived, this Korean flag was still there, but there was no five-star red flag of our great motherland! Of course, Qiao Jinling and his party did not think of and mentioned this issue when they contacted the delegation. But when I saw this scene, Qiao Jinling’s national shame that never happened was still violently hitting my heart! He knows that it is not because our country is not strong enough. The bigger factor is that the Yellow River Group Company was not seen by Americans at the time. He calmed down his emotions and met with Woodburn, vice president and general manager of the Superhard Materials Division, and accompanied the Woodbourne to visit the production line. But Woodbourn only let Qiao Jinling and his team look at the ordinary type, that is, the 5,000-ton two-side press, and their more advanced and up-to-date tens of tons of presses were blocked.

During the talks, Laomei was most interested in exporting their medium and high grade diamonds. When Qiao Jinling proposed to use the joint venture method to obtain the press manufacturing technology, they only expressed their willingness to press the 5,000-ton two-face press. The machine is sold to us. In order to finally obtain the production technology of the two-face press, the company signed a cooperation contract with GE.

This trip to the United States is unforgettable for Qiao Jinling. He secretly vowed to let the Yellow River Group become one of the top three diamond companies in the world in five or six years. Let China become a strong diamond power country and let the "Yellow River" Executives also hang the bright five-star red flag of our great motherland wherever the diamond industry is abroad!

After that, Qiao Jinling went to ODK and Dongming in Japan and went to South Korea's “Japan” and “Second” companies to inspect and once again actively contacted GE.

On January 22, 1995, after several efforts by the company, Woodbour, vice president and general manager of GE's superhard materials department, and his team came to the Yellow River Group. Finally, in Zhengzhou, in the province of Henan Province, he served as deputy governor Fan Qinchen and Xuchang. The Mayor of the City, Niu Xuezhong, and other witnesses signed a memorandum of cooperation. GE agreed to sell 50 5,000-ton two-side presses to the Yellow River Company, and then use the GE technology to produce 50 sets of the same type of press. In this way, the "Yellow River" will master this technology.

However, a "Jiuliutaihai crisis" that had a great impact on the history of Sino-US relations broke out between China and the United States. From 1995 to 1996, Taiwan’s former "president" Lee Teng-hui went to Cornell University to give a public speech and slammed the Taiwan independence activities. In the context of this farce, from March 8 to March 25, 1996, China carried out a large-scale missile launch and conducted a series of military exercises in the Taiwan Strait to the east of Taiwan and across the Taiwanese mainland. . On March 11, the United States also dispatched the aircraft carrier of the Nimitz aircraft carrier and the aircraft carrier of the independent aircraft carrier to the Taiwan waters. China has dispatched nuclear submarines, and the seas and seas in Taiwan have been clouded.

After the end of the crisis, the United States’ exports to China were subject to stricter restrictions. The cooperation between the “Yellow River” and GE was mainly due to the fact that the production technology of the two-sided top presses was not as follows.

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