During the production of locking fireproof file box, effective quality control methods are adopted, including monitoring during the manufacturing process and regular inspection by professional engineers at the end of the production. By such strategies, Dongguan Sanjiu luggage products Co., LTD tries its best to offer customers products which are unlikely to place customers at risk due to poor quality.

Sanjiu now is one of the most favored brands. So far, we have got a great many feedback about the quality, design, and other properties of our products, which are mostly positive. From the comments shown on our social media, we've received a number of encouraging news which refers that customers have received more interests thanks to us. The number of customers who keep buying our products is increasing as well. Our branded products are becoming increasingly popular.

In SANJIU, besides remarkable locking fireproof file box and other products, we also provide impressive services, such as customization, fast delivery, sample making, etc.