The hollow sales axis chain is relative to the solid axis chain. According to different use of the platform, various types of attachments are installed in the hollow sales axis of the chain, such as: the annex axis horizontal rod, etc., to achieve material improvement, transportation, transportation, transportation, transportation, transportation, transportation, transportation, transportation, transportation, transportation, transportation, transportation, transportation, transportation, transportation, transportation, transportation, transportation, transportation, transportation. Essence The main products include short -section distance of the hollow sales shaft conveying chain, double -fledging empty sales shaft conveying chain, non -standard empty heart -selling shaft conveying chain, etc. · use high -quality materials and advanced processing processes. The product has the characteristics of stable transportation and high synchronization.