2002GB/T 4850-2002 Test method for unwinding force of pressure sensitive adhesive tapes at low speed
1984GB 4850-1984 Test method for low-speed unwinding strength of pressure-sensitive adhesive tape
GB 4850-1984 Test method for low-speed unwinding strength of pressure-sensitive adhesive tape was changed to GB/T 4850-2002 Test method for unwinding force of pressure sensitive adhesive tapes at low speed.