http://www.tosupplychain.com/China Ceramsite Foundry Sand Our History Zhengzhou Top Trading Co., Ltd. was founded in the year 2012, which is a branch company of Xinmi Wanli Industry Development Co., Ltd. (Wanli Industry), a leading supplier of ceramic proppant. Top Supplychain is specialized in supply-chain of various kinds of chemicals. In 1994, Xinmi Wanli Industry Development Co., Ltd. was founded. Originally Wanli Industry manufactured refractory materials. In 2002, Wanli Industry seized the market opportunity in energy industry锛宼imely adjusted the filters in each production line to protect the environment and the health of workers. Cooperating with famous logistics companies such as Tianjin Waidai and Qingdao Haijun, Top supplychain has established a complete logistics system of container, bulk, sea and land transportation. In addition, we have branches and warehousing centers in North America, South America and the Middle East. Professional sales staff and efficient logistics team provide 24/7 services to ensure that the company's products are delivered to our customers' location.China Ceramsite Foundry Sand website:http://www.tosupplychain.com/