Experienced as long as 5-6 years of running in and improvement , our electric ball valves are finally applied stably in the animal husbandry equipment of our German client . In December 2012, our German client purchased 3 pcs of our products for testing. Later, they told us that they also purchased samples from 2 other companies in China and purchased similar products from 2 companies in Europe (well-known company in the industry) . After testing for 2 years, they found that our company's valve is the most stable one. Finally they chose to cooperate with our ....