Tungsten and Titanium are manufactured in China for two reasons #1 money and #2 a total disregard for safety.
Both have their own health risks by just working around. Both are more than highly explosive due the process of forging them under extreme pressure. Titanium is formed into what is called a sponge, Russia is one of the largest end users of Titanium. There are some plants in the US. Tungsten is more available in China, as well as many other materials not found abundant here. Tungsten is similar in certain processes as Titanium, under the circumstances that it is made makes it inherently very hazardous. The price of both reflects the difficulties of obtaining the raw materials and processing .
One thing that I do know about Titanium, is that I worked at a steel mill that used to make Titanium and it proved to be cost prohibitive. The main reason for the plants in the US is government use. The whole thing about buying or selling a product that has a Titanium coating is a marketing strategy that uses the by product of the material. It can inhibit corrosion, and scratches only on a miniscule level.