求翻译：在这20年来，大特锁业在不断的摸索和奋斗中，瞄准市场、积极开拓；引进先进设备，投入大量人力，取得了卓越成绩，开发生产的高档银行保管箱锁（单可变、双可变），成为国内首家通过美国UL认证的产品。公司生产的各种锁具及零件，可满足不同客户的需要。其中铜压铸零件以其精良的设备及完善的技术力量，在市场上享有一定的声誉。是什么意思？

In the past 20 years, date in the lock industry continues to grope and struggle, target market, actively explore; introduction of advanced equipment, a labor-intensive task, achieving excellence, development and production of high-grade Bank safe deposit box locks (single variable, double variable), becoming the first through the United States UL certified products. Company production of various locks and parts to meet the needs of different customers. Copper die-cast parts with its sophisticated equipment and perfect technology, enjoy a certain reputation in the market.