But as collectors entered the market, quality was improved, and stiff competition soon assured that only makers of the highest standard survived.
業者遭逢困境，紛紛覺悟﹘﹘要想打入國際市場，除了改進技術，製造高級品外，沒有第二條路。」於是廠家開始致力改進製造技術，並由不斷嘗試中，累積了經驗和技巧。