The electronic commodity trading systems used in different fields are faced to different problems in their design and application.

电子商品交易系统因具体应用领域的不同，在具体设计与实现时面临着不同的问题。

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Electronic commodity mainly include LED flashlights, headlights, all kinds of keychain light, hand illumination lamps, wine gift bag, business gift sets and so on.

电子小商品主要有LED手电筒、头灯、各式带灯钥匙扣、探照手摇发电灯，礼品有酒袋、商务礼品套装等等。

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Electronic course content in standard introductory classes had become a low-cost commodity.

标准入门课程的电子课程内容已成了低成本商品。

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When the HKMEx started trading U.S. dollar-denominated gold futures on an electronic platform in 2011, it was seen as an attempt to attract Asia's commodity traders away from established bourses in Chicago and London.

WSJ: Hong Kong Mercantile Exchange Being Probed