In the field of nitric acid, nitrates and nitro-compound fertilizer, HJ has over twenty patents and know-hows. When HJ is charging one project, HJ will organize a group of experts from different as-pects demonstrating and optimizing the key tech-nology questions and scheme; therefore we can put the newest technology achievement and innovate contents in the process designing work then we can submit the best result to our clients. After finishing the process package, HJ will cooperate with the engineering design company positively to ensure the expression of our advanced technology.