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2022
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Invention
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Preparation method for fumaric acid pour point depressant for crude oil. A fumaric acid pour poin... |
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2021
|
Invention
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Method for preparing fumaric acid pour point depressant for crude oil. The present application re... |
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2019
|
Invention
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Three-dimensional crude oil demulsifier, preparation method therefor, and application thereof. A ... |
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2017
|
P/S
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[ Construction consultation; commercial housing construction; ] mining extraction; drilling of we... |
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P/S
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Construction consultation; commercial housing construction;
mining extraction; drilling of wells... |
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2016
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P/S
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Mine borers; mine working machines; geo exploration
machines; drilling rigs, floating or non-flo... |
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P/S
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Epihydrin alcohol; Surface-active chemical agents for general use in the industrial arts, namely,... |
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|
P/S
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Epihydrin; surface-active chemical agents; oil-separating
chemicals; oil-purifying chemicals; pu... |
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|
P/S
|
Mine borers; mine working machines; machines used in
geophysical exploration; drilling rigs, flo... |
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P/S
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Oil-bleaching chemicals; oil-purifying chemicals; water-purifying chemicals; chemical additives t... |
