大陆外企的产品一向都有严格的内销限制，以往原则上只有小量国内难以自给，且又急需进口的外企商品有限度地在大陆进行内销，其余外企的产品，原则上都属返销国际市场。近年来，由于大陆市场不断开放，同时，为了尽快加入关贸和与国际市场接轨，有关当局已经渐渐放开外资企业? Domestic foreign companies’ products have always had strict domestic sales restrictions. In the past, in principle, only a small amount of foreign domestic products that were difficult to self-sufficient and were in urgent need of import were sold domestically on the mainland. In principle, the products of other foreign companies were sold back to the international market. In recent years, due to the continuous opening up of the mainland market, and at the same time, in order to join the GATT and join the international market as soon as possible, the relevant authorities have gradually liberalized foreign-funded enterprises.