Hi,everybody! We are from Ningbo promise drainage system products factory, it was established in the year 2010, located in Chaiqiao industrail zone,Ningbo City,China.Now there are 50 workers and engineers in our factory.Our main product is drain,the material including brass ,aluminium,iron etc..Now all of them export to overseas markets.We are welcome customers at home and abroad to come to inquiry.Thank you!