Hongkong Tongling industry limited company is located the Hongkong Kowloon Jotun woosung street 165-167 the domain of commercial building, the company has its own first-class production line, experts and appraisers, senior designer 10 or above, skilled workers more than 20. The company produced high-quality jade, full of poetic, has the extremely deep cultural connotation and health value "Ling Yu handed down, safe life".