Since China and South Africa did not establish normal diplomatic relations in the past, economic and trade exchanges between the two countries were mostly indirect. With deep affection for China and confidence in China's market potential, Su Huajie acted as a navigator to promote economic and trade cooperation without hesitation. He took economic and trade exchanges as an opportunity to promote more exchanges between the two peoples until the establishment of diplomatic relations between China and South Africa.
In the early 1990s, Su Huajie made successful investments in Guangzhou, Shenzhen, Zhuhai, Beijing and Tianjin, and then set his sights on inland provinces. 1992, he invested in Shaanxi, setting five "firsts" records-at that time, he was invited by the Foreign Affairs Office of Shaanxi Province to attend the Northwest Economic and Technological Fair, and he was the first to sign a contract at the meeting. His company became the first South African multinational group to set up a permanent office in the mainland. The project he signed was the first big project at the fair and the first project started after the fair, with an investment of 26,000 yuan. Covering an area of 13000 square meters, with a height of1floor, it was capped in only 108 days, making it the first investor to complete a construction project of this scale in such a short time. Xiangfa (Xi 'an) Real Estate Development Co., Ltd., Bolong Electronics Co., Ltd., Xi 'an Huayue Hotel, Xi 'an Wang Fu Catering and Entertainment Co., Ltd. and Huajie International Advertising Co., Ltd. have been established in Xi, with total assets exceeding 6,543.8 billion yuan. At present, Su Huajie's enterprises are located in Guangdong, Hainan, Zhejiang, Yunnan, Jilin, Gansu, Qinghai, Shaanxi, Beijing, Shanghai, Tianjin, Chongqing and other places in China. Not long ago, he registered and established South Africa Huajin International Group Co., Ltd. in South Africa, engaged in the import and export agency business of raw materials, products, equipment and technology in the fields of metals, chemicals, textiles, stationery and pesticides, and became the exclusive agent for the purchase and sale of 26 large state-owned enterprises in China in South Africa and Africa.