德福科技：目前公司高端电子电路铜箔RTF1-3和HVLP1-4等产品目前均已实现批量供应

Group 1 - The core viewpoint of the article is that Defu Technology has successfully achieved mass supply of its high-end electronic circuit copper foil products, which will enhance the company's profitability as the proportion of high-end products continues to increase [1] Group 2 - The specific high-end products mentioned include RTF1-3 and HVLP1-4, indicating a focus on advanced technology in the company's offerings [1] - The continuous increase in the share of high-end products is expected to contribute positively to the company's profit margins [1]