Nope. Tianjin is in the northern half of the country on the eastern coast. Fasttech, and every other China seller, are all located in Shenzhen, which is on the southern coast just outside of Hong Kong. The two are thousands of miles apart. Saying that an explosion in the port in Tianjin would affect shipping out of Shenzhen is like saying an explosion in the port in LA would affect shipments going out of NY.