注:“●”的产品按gb12792-1991标准生产。 “*”的产品按q/320282dce037-2003标准生产。 其余产品按mt818-1999标准生产。 note: “●”indicates that the product is manufactured according to the standard of gb12972-1991 “*”indicates that the product is manufactured according to the standard of q/320282dce037-2003. the rest product is manufactured according to the standard of mt818-1999.