According to the statistics of signpost network, the registered trademarks of flange and shaft wall have reached 16.
How to choose other minor categories when registering:
1. Selectively registered class (plastic connectors and connecting parts and devices composed of the above, including extended arch structure, roof support device, support ring, roof support, extended scissors and support protection, group number: 1909) trademark 1 piece, accounting for 6.25%.
2. Registered trademark 1 piece (absolute clean room door, group number: 1909), accounting for 6.25%.
3. Registered trademark 1 piece (molded components and profile components, that is, visual shielding walls used for anti-collision barriers, anti-collision walls, anti-skid barriers, noise protection fences and roads, group number: 1909), accounting for 6.25%.
4. Registered trademark 1 piece (security door, group number: 1909), accounting for 6.25%.
5. Select and register (frames, rings, arch structures, roof timber, supports, supports with folding shed devices, slings, plastic joints) for the following extension, covering parts and bolted parts, including slideways, pillars, foundations and pillars of mining working faces, tunnels, passages, protective places, protective storage tanks and protective tunnels, and use them for road construction and tunnels.
6. Registered trademark 1 piece (plastic scaffold, group number: 1909), accounting for 6.25%.
7. Registered trademark 1 piece (door guard and door guard, group number: 1909), accounting for 6.25%.
8. Registered trademark 1 piece (nonmetallic doors, doors and shutters, group number: 1909), accounting for 6.25% of the registered trademark.
9. Registered trademark 1 piece (floor joist, support bracket, plastic roof wood bracket, roof wood bracket bottom, group number: 1909), accounting for 6.25% of the registered trademark.
10. Registered trademark 1 piece (especially entrance door, group number: 1909), accounting for 6.25%.