Patented derusting material

As we all know, the easy-to-use steel pipe straightening, derusting and painting machine is Kangkun brand. 1 1 patent runs through many models in Zhi Zhi, and the price ranges from 6,000 yuan to 42,600 yuan. Note that the virtual network is true or false. After five infringements, the Kangkun brand patent has been copied and tampered with, and the work steps pretend to be the new products of the original manufacturer. Talk about what kind of products are called, such as roller type, hyperbola type, revolution type, centrifugal type, rotary type, spiral type, one-time automatic type, professional source leading the king, three-in-one machine, several rounds and generations, etc., so which similar products are good or bad depends on your IQ. The real automatic straight pipe elbow enters and exits the roll gap at the same time without adjustment, KKQ-JOK type 42600 yuan. On August 3rd and 6th, 20 18, the State Information Bureau authorized two major invention patents, namely "automatic straightening, derusting and painting system for circular pipes", with the announcement number of CN 103639245. B and CN 1037065. 20 19 was successfully put into the market and used by state-owned enterprise construction groups, construction companies and large shipyards. Please look at this picture and see if it is good.