inventing the biggest economic profit and superior serviec to customers, shandong tongda textile machinery co., ltd tries its best to develop in spinning frame to provide quality p... spinning frame shandong tongda group model fa cotton spinning frame the kind of machine is suitable for processing of...
years. the guarding of this secret, at threat of death, perhaps foreshadowed current ethical issues related to technology transfer and the intellectual property rights of states (state sovereignty) and corporations versus the common heritage of humanity. today, at least million pounds of raw silk are...