prov:value
| - Suitable materials for manufacturing the shafts 30 of the second hook elements include, but are not limited to, metals and thermoplastics such as polypropylene, polyethylene, polyamide, polyester, polystyrene, polyvinyl chloride, acetal, acrylic, polycarbonate, polyphenylene oxide, polyurethane, polysulfone, and the like.
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