Go through a Government Foreign Trade Corporation. Exhibit at trade fairs. Advertise in industry-specific trade journals or magazines. China is too vast and varied a country to market to as a whole. One important thing to remember is that getting your product to the market, at the right time and at the right place, can be very difficult with the current infrastructure.
Distribution is the weak link here, especially in the inland provinces.
That's one major reason why you should focus your marketing and distribution efforts. Instead, focus on one or a few of the richest cities and provinces. Deciding where to look for opportunities and where to locate a business depends upon the particular needs of the business. A good salesperson is not only familiar with his commodities, but also knows the local customs and conditions, character and special features of each region. Generally speaking, people in the coastal areas and in the south of China have a higher level of education, more contacts with the outside world and better access to information.