1. 99.97% High Efficiency FilterSungjin corporation produces high quality products through the naturalism to improve the living quality and puts its best effort in fulfilling the value of the customers&＃39; satisfaction. As a part of our effort, we developed filters that remove 99.97% of the harmful paticles, house dusts, mites, and mildews and challenge continuously do to maintain people&＃39;s healthy life. One of Sungjin&＃39;s important business supplies products such as air cleaner filter, building factory air conditioning filter, clean room filter, air vacuum cleaner filter, air conditioning filter, car interior filter and other various filters which contribute in the human health.2. Excellent Particulate Respirators : Navis MaskA dust-free mask is a new concept of living property of Sungjin with consideration of nature and safety on the basis that clears over the current concept of equipment. We produce a mask with high dust-free ability by applying the world leading technology and new equipments, hence situating ourselves in the related businesses as an emerging power. We have carried on experiments under various enviroments and have demonstrated the superiority of the company&＃39;s product with the certification from National Verifying Organization to offer a great advance in people&＃39;s safety and health.