WorkVenture gives you an inside look at what it's like to work at Ja Premium Service Co., Ltd., office & team photos, reviews and more. This is the Ja Premium Service Co., Ltd. Company Page. All content is posted anonymously by employees currently or previously working at Ja Premium Service Co., Ltd..Apply to KPN LANDApply to NusasiriApply to 2ShirtDuaApply to WorkVenture Technologies