| 摘要 |
PROBLEM TO BE SOLVED: To provide a joint for connecting PET bottles and vinyl chloride bottles whose volume as a container can be freely designed and which is inexpensive, handleable and usable and can be widely used, easily assembled, manufactured, and used by connecting a plurality of PET bottles and vinyl chloride bottles parallelly or in series through joining parts keeping airtightness in order to effectively use them several times. SOLUTION: The joint is provided with at least two passageways of a water inpour opening 1 and an outpour opening 2 in a PET bottle and a vinyl chloride bottle and one or more screw type joining parts 3 are included with regard to the shape of the diameter.
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