In the past many manufacturers passed up the domestic market because they feared that their best products would be quickly pirated and their orders taken out from under them. Not only was there little cooperation between companies, factories were never open to visitors.
過去業者捨內銷市場而就外銷市場，因惟恐產品被同業模仿抄襲、訂單被搶走，不但同業間甚少交流，工廠也一概謝絕參觀。