The report by the American Chamber of Commerce in China reflects frustration among companies that see China as a key market but face growing efforts to block access to technology and other promising industries. Foreign companies complain Beijing is reducing access to its markets for electric cars, computer security technology and other promising fields or pressing them to give know-how to potential Chinese competitors. The big question for many member companies as 2017 dawns is how the bilateral relationship may affect their business and what steps both governments will take to ensure a positive business environment. European companies complain they are blocked from acquiring assets in China at a time when Chinese companies have bought leading brands including German robot maker Kuka in a multibillion-dollar acquisition spree.