Shenzhen Deruilong Watch magulu Company Limited anakhazikitsidwa mu 2004, ili mu Longgang, Shenzhen, China. Special mu chuma cha Chikopa wotchi zomangira, Olimba stailess zitsulo zitsulo zomangirazo, zosapanga dzimbiri thumba zomangirazo, Pu zomangira ndi zomangira pakachitsulo.

Tikuchita everhting kupereka makasitomala ndi utumiki bwino, Best mankhwala ndi mtengo mpikisano kwambiri. Kotero ife zimagulitsidwa ku Mid-kum'mawa, South America, Europe ndi USA