የክር ትልቁ ላኪ ቻይና አምራች ጀምሮ ያስገባል። 2004
የቁልፍ መቆለፊያ ማስገቢያ
የቁልፍ መቆለፊያ ማስገቢያዎች, also known as keenserts or keyserts, boast external threads and incorporate keys or locking rings on their exteriors. These keys firmly engage with the host material, ensuring exceptional resistance to both torque and pull-out forces.
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