Specifications

for OKI  ES3640/3640e compatible toner cartridge

 <

1.good quality

2.1:1 replacement

3.quick delivery

4.golden green opc /LG power

5.factory directly sales /oem quality

6 .we have ten years experience in manufacturing

7. our factory can print customer logo at customer requested package.

8. compatible price ,  if your qty is good the much discount will be offered

9.our factory test each products by machine before shipement, make sure each products is good against the defects leaking out to customer.