Hangzhou crystal of electronic science and technology co., LTD., registered address is located in yuhang district, hangzhou city, zhejiang province hangzhou warehouse street longtan road before 7 future research A garden room 426, block A, the registration organ for supervision and administration bureau of hangzhou city yuhang district market, legal representative for yun-fang Chen, business scope, including technology development, technical services, technical advice, achievement transfer, computer software and hardware, electronic products; Services: graphic design, production; Design, production, agency, release: domestic advertising (except news media and online advertising); Sales: Electronic products (except electronic publications), office supplies, computers and accessories, digital printing equipment, clothing and apparel, shoes and hats bags, leather products, daily necessities, craft gifts, knitting products, office equipment, projection equipment, audio equipment, household appliances. (For projects subject to approval according to law, business activities can only be carried out after approval by relevant departments)