Dtone lays stress on product quality. All new products at trial phase must go through strict tests including environmental test, high and low temperature test, dropping test, high vacuum test and life test.

Assembled cartridges will be applied with 100% printing test.

Cartridges’ test pages will be compared with the benchmark prints to make sure all the assembled cartridges are free of defects. 

We guarantee for 100% replacement or refund for any defective products.