访四家浙企，听创新四重奏

Group 1 - The article highlights the significance of four private enterprises in Zhejiang, showcasing their unique strengths and contributions to innovation in various sectors [1][2] - Xinhua San Group is recognized as a leading network infrastructure giant in China, with a strong emphasis on technology and innovation, investing 12% of its revenue in R&D and holding 16,000 patents [2][3] - Wan Shili Group, a traditional silk enterprise, integrates cultural heritage with modern technology, achieving breakthroughs in biotechnology and innovative silk products [3][4] Group 2 - Cloud Deep Technology is a rising player in the robotics field, focusing on advanced robotic solutions, with products sold in 44 countries and a vision to bring humanoid robots into households [3][4] - Xian Na Optoelectronics stands out in the photovoltaic industry, being the first to achieve mass production of perovskite solar cells, which offer lower costs and higher efficiency compared to traditional silicon [4]