subsidiary company is in Ningbo, responsible for marketing and exporting, near Ningbo Port and Ningbo Airport. Another subsidiary company is in Hongkong, called TOP CREDIT DEV LIMITED, in charge of free trade. There are 400 employees in HR, R&D, production, and sales department with an area of 30,000 square meters. 500 tons of products can be run out every month to meet customers' delivery requirement. 15 R&D staff members develop 20 new products in 30 days.