Please Present Evidence的意思|示意

请提供证据 Please present evidence. In fact, comparing to gigantic Chinese export total, exports to 'other developing countries' only account for tiny proportion. Furthermore, the most advance technology is often not the machinery themselves. Technological know-how is by far the most value of cutting-edge clean technology which most of the developed countries not willing to share with China. In this context, more negotiations and cooperations to overcome this barrier are needed.