Tianjin Yihang Shipping Service Co.,Ltd. was located in the biggest comprehensive port in Northern China---Tianjin port in October 2005. With the help and support of all port departments and all walks of shipping industry, Yihang Shipping has gained rich experience in oil sludge disposal. Yihang Shipping was highly praised by clients through the high quality service, and now Yihang Shipping has become the pioneer of the same industry. At present, Yihang Shipping has signed agreement with several overseas companies for receiving oil sludge and cleaning oil tanks, such as Maersk, MSC, etc. Form now on, Yihang Shipping will fatherly improve the service awareness, and strengthen the sense of mission and responsibility of environmental protection. All staffs will make persistent efforts and a contribution to protecting the environment in waters of Bohai Bay Area.