suzhou litree ultra-filtration membrane technology co,. ltd., locates in suzhou city, one of the key cities in the yangtze river delta. suzhou is a renowned cultural, historic and tourist city, bordering shanghai on the east. the taihu lake in the west and the yangtze river in the north. total population is 5.91 million, most of which are well educated. that is the base we've build a efficient team to produce large quantity and high quality products for the customers.