On valentine’s Day,our customer from Russia viseted our factory,they want to know more about our company,espically the technology of our product,yestaday,our engineer Mr Kang give them a detail intriduction about our products which they want, my saler told me what they want to buy from our factory is the ball mill, after our engineer’s explaination，they are very satisfied with our company and our products,In the afternoon,the customer and our company signed the contract about ball mill Dia 2.1*3 in our international department。