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ISO9001
Explosion proof certificate
Work safety certificate
● Patent certificate:
1. Patent certificate of invention -- a manufacturing process of heating tube made of resistance wire with double wound wire structure
2. Utility model patent certificate -- a cable bridge for easy disassembly
3. Utility model patent certificate -- an arc extinguishing fuse with a circuit break mark
4. Utility model patent certificate -- a one-way switch with arc extinguishing function
5. Utility model patent certificate -- a fast fuse with prompt function
6. Utility model patent certificate -- a cable tray
7. Patent certificate of utility model -- a moisture-proof fuse
8. Utility model patent certificate -- an efficient drying device for engineering plastics processing
9. Utility model patent certificate -- a drying device for engineering plastics processing
10. Utility model patent certificate -- a fast fuse
11. Utility model patent certificate -- a kind of easily removable cable tray
12. Patent certificate of utility model -- a two-way switch operated remotely
13. Patent certificate of utility model -- a dead-angle drying device for engineering plastics processing, etc.
