怡红院亚洲第一综合久久麻豆_无码99久热精品视频_亚洲无码1_黑人又粗又大又硬A片,亚洲黄色a,日本www.色,黄色视频网址免费,丁香五香天堂网久久,欧美特级黄色网站,女生自慰动漫,亚洲无码电影天堂

TECHNOLOGICAL INNOVATION

Desun attaches great importance to investment in product R&D, technological innovation, and process upgrading. Desun continues to introduce various types of middle and senior talents and establishes a school enterprise joint research center to jointly build an "Excellent Engineer" off campus internship base. Relying on a large number of technical talents with both morality, education, and knowledge, Desun continuously carries out innovative development and optimization to provide high-quality products for domestic and foreign customers.