Koushuiwa is not Japanese. According to the official website, Koushuiwa, click on the homepage and search in the search box. Is Koushuiwa Japanese? I learned that Koushuiwa is not Japanese. Koushuiwa is a brand-name product in Jiangsu Province, which owns Koushuiwa/Moon Street/Jiangnan Jiajia food brand. It is an agricultural science and technology enterprise integrating R&D, snack food manufacturing, processing and marketing. Koushuiwa is a brand in China. Suzhou Koushuiwa Food Co., Ltd., brand year: 16, brand country: China, Shanghai slogan: It is very simple to enjoy food, with a sales level of more than one million pieces and a very high brand awareness. Suzhou Koushuiwa Food Co., Ltd. is a professional leisure food production enterprise integrating research and development, processing and sales of agricultural products.