Since established in 2014, Welzek has been a company with complete system of R&D, production, sales and service. The sales services covers major electronic product manufacturing bases all over China, based on Welzek branch company in Shenzhen, Shanghai and Xi’an and headquarter in Beijing. Since 2014, hundreds of manufactories have chosen Radio Signal Tester and Precision Programmable Power Supply of Welzek for R&D and manufacture of their wireless products, millions mobile phones and wireless modules have been benefited by these test equipment at home and abroad.