DEVELOPMENT HISTORY
-
2019
2019,including,technical,for,bits,the,as,diamond,patents.As of 2019, the company has obtained 31 technical patents for diamond bits, including five invention patents. -
2006
2006,co.,subordinate,clean-up,for,tools,out,yisida,andIn 2006, China Petrochemical Corporation carried out long-term investment clean-up for its subordinate enterprises. The company was completely privatized and renamed as Wuhan Yisida Tools Co., Ltd. -
2003
2003,ltd.,co.,was,bit,established,in,shareholder.,diamond,wuhanIn 2003, Wuhan Jiangzhuan Diamond Bit Co., Ltd. was established, and Jianghan Petroleum Bit Co., Ltd. was a shareholder. -
1995
1995,in,amoco,was,whirling,technology,bit,anti,the,diamondIn 1995, the anti whirling diamond bit technology of Amoco Company was introduced. -
1990
1990,in,the,hughes,united,was,technology,christensen,bitIn 1990, the diamond coring bit design and manufacturing technology of Hughes Christensen Company in the United States was introduced. -
1987
1987,bit,of,was,the,diamond,and,factory,in,hughesIn 1987, the diamond bit design and manufacturing technology of Hughes Company of the United States was introduced, and a diamond bit branch of Jianghan Bit Factory was established.
(86-27)5941587
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CONTACT US
(86-27)59415879 / FAX(86-27)59415882
No. 3, Huanglong East Road, East Lake New Technology Development Zone, Wuhan, Hubei, China
info@wheastar.com / 430205(Postal code)
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