Revenue is derived from sales of our residential lighting products. These products are directed towards consumer home LED lighting for both indoor and outdoor applications. Revenue is subject to both quarterly and annual fluctuations and is impacted by the timing of individually large orders as well as delays or sometimes advancements to the timing of shipments or deliveries. We recognize revenue upon shipment of the order to the customer when all performance obligations have been completed and title has transferred to the customer and in accordance with the respective sale's contractual arrangements. Each contract on acceptance will have a fixed unit price. Most of our sales are to the U.S. market which in 2020 represented 75% of revenues and we expect that region to continue to be the major source of revenue for the Company. We also derived 25% of our revenue from overseas sales. Net revenue also includes the cost of instant rebate coupons, and product support allowances provided to retailers to promote certain products. All of our revenue is denominated in U.S. dollars.
The Company oversees and controls the manufacturing of its products, which are currently made in China and Thailand by OEM contract manufacturers, through three wholly owned operating subsidiaries: CAPI, CIHK and CLTL. To support the current e-commerce model that will drive our business in 2021, we will be putting inventories into warehouse facilities stateside for direct-to-consumer fulfillment. When introducing the Connected Surfaces program to Big Box retailers in the back half of 2021, the Company will resume its direct import model. At that time, the Company's products will be built to order for specific promotional periods and does not require replenishment domestically.
The company's financial initiatives are driven by its entry to new distribution channels and calls for an increased emphasis on an e-commerce business model. Online platforms have advanced with consumers across all product lines. The Connected Surfaces category should find its way to retail shelves after it has been established through its direct-to-consumer effort. The Company's marketing strategy will shift its historic reliance on Big Box while delivering more profitable business.
Operational cashflow is significantly influenced by the timing and launch of new products as well as favorable payment terms negotiated with overseas suppliers. With our Hong Kong and Thailand operational presence, we have built an operational structure that, through relationships with factory-suppliers both in Thailand and China combined with our expertise, that under normal operating circumstances, can develop and release quality, innovative products to the marketplace substantially quicker than in previous years.