Hero ink is that year production

Shanghai Fine Cultural Products Co., Ltd. out, as if from 1997 onwards, earlier should be from the original Shanghai Ink Factory (renamed in 1966) counting on the former Minsheng Ink Factory (established in 1925), Hero Ink is probably also produced in 1966 or so on the market mainstream types, it should have, markers, neutral pens, traditional writing, fluorescent ..... etc