Why is it called Lou Tieyuan Wang Qing?

Lou Tieyuan Wang Qing is a fruit brand produced by Hongyuan Agricultural and Sideline Products Production and Marketing Cooperative in Binchuan County. It takes Wang Yangming grape as its main product and "Building Iron Source" as its brand. It is possible that special planting, management, picking and processing techniques have been adopted in the production process, so that its products have high quality and characteristics in taste, sweetness and aroma, so it is named "Lou Tieyuan Wangqing".