There is no internal scale product of dry screw pump owing to the late research starting, so like products are all depend on importing and the price is very expensive.

由于国内螺杆干泵的研究起步较晚，目前还没有规模化的产品，同类产品全部依靠进口，价格十分昂贵。

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There were some new problems such as the easy exhaustion of the liquid ammonia circulating pump and the appearance of liquid ammonia product was off specification.

目前存在氨液循环泵易抽空、液氨产品外观不合格(颜色发红)、液氨外送泵密封泄漏等问题。

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Manufacturer of air pump and personal product vending machines.

空气泵和个人的产品制造商自动售货机。

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Another research product of Professor Soponronnarit that has been starting commercialized is the "heat pump dryer".

UNESCO: Science Policy and Capacity-Building