How to select the correct thread milling cutter supplier

How to correctly select the thread milling cutter manufacturers?
Has been a lot of customers and friends asked me how to choose a thread milling tool suppliers, here to do a reply.
The test of a thread cutter manufacturers, there are 2 kinds of methods:
1, he is going to do the following standard thread thread milling cutter, try a glance: American aviation taper thread anpt; American dry seal NPTF tube; aviation threaded unj, MJ; round thread teeth and RD and the tooth top and bottom teeth have strict demands on the thread cutter.
2, specified in the front angle of the threaded milling cutter, and asked to do a single side error of the angle of the angle of the thread milling cutter 15 ", linear degree 0.002mm, pitch cumulative error 0.003mm (25mm), testing standards for the implementation of the European standard.
Rothschild fully grasp the above technology, Rothschild implementation of the plant standards, higher than the European standard! ]
More than the domestic demand for the thread milling cutter manufacturers do not come out, if the domestic manufacturers can do is the preferred supplier of course!
Europe and the United States of tool vendors, including Sandvik, iscar, Kenner, mountain high, Walter, have thread milling cutter, but are not their own production and thread milling cutter and not their strong [Rothschild met many times, is not a problem! And the price is a little high.
Specializing in the production of the European and American thread milling cutter, such as EMUGE, Rothschild, Vargas, Kamas,, CPT and so on, the price is relatively high, the rest of the brand price is relatively high.
Which Rothschild has set up factories in the country, the highest price, and to solve the problem of non - standard thread milling long delivery, while technical support more in place, more intimate service.
In summary, Rothschild thread milling cutter is your first choice, the thread milling cutter is Rothschild, Rothschild is the thread milling cutter!!!