Welcome Engineer Mr. Shang come here for factory inspections . The company of Mr. Shang is professional research and development of ultrasonic scalpel , the products of his company is leading domestic technology,  which is comparable with the world giants company Johnson & Johnson in USA . Life is heavy, there is a thousand gold . Ultrasound scalpels are vital products for hospitals and patients . Can provide PCBA for such products, We have great glory and heavy responsibility.