WorkVenture gives you an inside look at what it's like to work at Happy Diamand & Jewelry Co., Ltd., office & team photos, reviews and more. This is the Happy Diamand & Jewelry Co., Ltd. Company Page. All content is posted anonymously by employees currently or previously working at Happy Diamand & Jewelry Co., Ltd..Apply to PharmaceuticApply to Dalian ChengsiApply to HAKO VentureApply to WorkVenture Technologies