Greenhouses, Greenhouse Shade System manufacturer / supplier in China, offering PP Growing Gutter in Greenhouse, Shading Pinion for Greenhouse, Pinion for Ventilation System in Greenhouse and so on.
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The greenhouse poly film roll up winch motor can be used both for roof and side ventilation. Greenhouses covered with poly film needs to be opened by rolling up the film. With this unic set of product, it makes your greenhouse easily controlled.