Welcome to the website of (주) Sunil Engineering.   We specialize in the production of "Diffusers" primarily used in air circulation devices for building and construction. We are proud to have achieved industry-first certifications such as the Korean Industrial Standards Mark (KS) and Quality Assurance (Q) certifications. As an ISO9001-certified company, we prioritize customer satisfaction, strive to achieve reasonable corporate profits in response to growing demand, enhance environmental conditions and employee welfare, and contribute to the national economy. With a sense of pride, we are dedicated to our business, aiming to provide low-cost, high-quality products through continuous improvement and enhancement.   We sincerely ask for your continued support and affection, and we thank you for visiting our website.