The cylinder body is made of environmentally-friendly, high-quality glass fiber and reinforced polyester material, which is sturdy and durable, not easy to wear, and not easy to break. The spherical cylinder body has a uniform thickness of the cylinder wall and can withstand water pressure evenly. The design of the access port can be selected, which makes it easy to replace the filter material on the cylinder. Used in aquaculture, aquariums, aquariums, etc.
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