Ningbo Zhongli Bolts Manufacturing Co., Ltd. anakhazikitsidwa mu 2003, ndi katswiri wopanga zomangira mkulu-mphamvu mu specifications zosiyanasiyana kwa zitsanzo zosiyanasiyana, chimene chimaphimba kudera la mamita lalikulu 10,000, likulu mayina a 1500,000 RMB, ndi okwana zokolola pachaka cha 8,000 kwa chaka. Kampaniyo yakhazikitsa nthambi zingapo zogulitsa m'zigawo zosiyanasiyana ku China. Pakadali pano, zinthu za kampaniyo zimatumizidwa ku Europe, USA, Middle East, Africa, Southeast Asia ndi madera ena. Kampaniyo ili ndi luso lamphamvu, zida zoyezetsa wathunthu ndi makina osiyanasiyana odziyimira pawokha okhala ndi masiteshoni ambiri ozizira komanso otentha, kuti akupatseni zida zodalirika komanso zapamwamba kwambiri. Zogulitsa zathu zazikulu za ZYL zomangira zimaphatikizira mabawuti a hex ASTM A325 mtundu 1, A490, mabawuti akumutu DIN931, DIN1639, DIN1639, DIN9319, DIN9319, DIN9319, DIN9319, DIN9319