What are the main reasons for the low profits of Chinese enterprises? What aspects need to be improved and improved? (About 300 words)

I think there are many reasons, including external reasons, such as high logistics costs. Mainly due to internal reasons, for example, many companies do not have core competitiveness, not to mention those factories that OEM for Apple, and an IPHONE can only earn 27 cents. Even the "giants" in the home appliance industry such as Hisense and Konka have not mastered the core technology, so they have to pay a large amount of patent fees for this; For example, many enterprises are too small to take advantage of economies of scale. Automobile manufacturing giants have estimated that a car with a sales volume of 200,000 sets of molds has the lowest cost. How many enterprises in China can own a car with an output of more than 200,000 sets? ; For example, many state-owned enterprises are overstaffed and regard state-owned enterprises as fat. Who has the ability to take a bite can't be said to be everywhere, at least it is not uncommon; Wait a minute. If you are not careful, it will be almost 300 words. Please add improvements and improvement plans.