Generally, the sample of graphene supercapacitor is provided by Shanghai Green Tech Co.,Ltd. without the exemption from freight fee. Taking the distance between export destinations and the port and other overhead expenses into account, the cost of delivering the sample may be higher than the unit price of the sample itself. From delivering the sample out of the factory to customers' hands, the whole manufacturing process can be completed requiring the combined efforts of a great number of people including warehousemen, shippers, and after-sales service staff. The cost of manpower is necessary.

Shanghai Green Tech is considered as an outstanding company when it comes to the R&D and manufacture of graphene battery. Various in styles, Shanghai Green Tech's graphene battery can meet the needs of different customers. GTCAP graphene supercapacitor is the outcome of integrated knowledge. It is designed under the knowledge of the photosynthesis, photoelectric chemistry, and photodecomposition reaction. The performance of super capacitor module has achieved or surpassed the industrialization product performance standard.

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