Changxing Hongying Building Materials Co., Ltd. was founded from the expansion of East Plum Building Materials Factory. Our company is located in Changxing County, Huzhou City, Zhejiang Province. We has been specialized in producing all kinds of manhole cover for over twenty years, covering an area of thirty thousand square meters. According to different needs from different customers, our company offers a variety of different environments for our manhole covers. we produces high-strength ...