Along with many new materials and techniques,helium abstraction technologies from natural gas have been innovated like the adsorption and membrane osmose process have developed fast and coproduction and combined technologies have a good application prospect, which provide new thoughts for the development of helium abstraction technologies from natural gas.

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gestion en cooperation：合作經(jīng)營

32,entreprise a capitaux mixtes 合資企業(yè) | 33,gestion en cooperation 合作經(jīng)營 | 34,production en cooperation coproduction 合作生產

Cooperation parties：參加協(xié)作的各方

Cooperation on commercial terms 商業(yè)原則上的合作 | Cooperation parties參加協(xié)作的各方 | Coproduction agreement聯(lián)合生產協(xié)議