It was during this time that Tan established Tan Kah Kee Co., with Khiam Aik serving as the primary segment of the business, which included rubber plantations, rubber manufacturing, and rubber curing, with products sold in overseas markets as far away as the United States.
他成立陳嘉庚公司，以謙益作為橡膠總公司以總攬全局，業務包括橡膠園、生膠加工和熟膠製造，產品直銷美國等海外市場。