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Heilongjiang Huasheng Graphite Co. Ltd
R&D and sales of graphene and graphene-related products, lubricant manufacturing, graphite and carbon products manufacturing, mineral oil manufacturing with formulated additives (excluding dangerous chemicals, flammable, expl
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Utility Model Patent Certificate
Upload time：2021-06-03 Views：84 Back to list
| Issuing agency： | State Intellectual Property Office of the People's Republic of China | Delivery time ： | 2017-04-12 |
| Upload time ： | 2021-06-03 | Valid until ： | perpetual |
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