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By certification 
Product name: Hollow spinneret
Material: stainless steel
Size: Min. ID size is 0.35mm.
Description: This type of hollow spinneret is single bore, used for the membrane producing. It is also popularly accepted by university experiment lab. But as our existing technology, our min. ID size only could be 0.35mm. We also could do the spinneret according to customers’ own design.
