Colku Electrical Appliance Ltd. was founded in 1989. With the 50000m2 workshop and 4 automatic assembly lines. we have the production capacity of 2000 units per day. During the past 25 years, Coku has become a top OEM/ODM manufacturer of truck air conditioner and portable refrigerator. We offer the service from product design, structure build up, molding producing, first sample making, certificates applying to final production. Our factory covers processes including plastic injection, plastic absorber forming, metal lazer cutting, punching, bending, logo printing, foaming injection, compressor producing and final assembling. Colku pays high attention to Quality Control System, and implemented the lSO 9001 and lATF 16949 Systems. With our MES controlling system, we have strict control on each step from incoming materials, semi-products processing. foaming, assembling, electrical testing, leakage detecting, final checking, sampling and ex warehouse.