8218TCVN 8218 : 2009 Xuất bản lần 1. BÊ TÔNG THỦY CÔNG – YÊU CẦU KỸ THUẬT. Hydraulic concrete – Technical requirements. HÀ NỘI – 2009. 1 TCVN 8218 : 2009. 2 TCVN 8218 :The Miyota caliber 8218 is an automatic movement found in many microbrand watches. This caliber is part of the Miyota 8000 Series family of movements