Qingdao Yongrui Trade Co., Ltd. is a subsidiary of Taiwan Yong-guang Group, the main business of leather dyes, textile dyes, paper additives, special chemicals, and other chemical products sales.

• 青岛永瑞贸易有限公司是台湾永光集团旗下子公司，主要经营皮革染料、纺织染料、造纸助剂、特殊化学品等多种化工产品的销售。