WorkVenture gives you an inside look at what it's like to work at Great Happiness Management Co., Ltd., office & team photos, reviews and more. This is the Great Happiness Management Co., Ltd. Company Page. All content is posted anonymously by employees currently or previously working at Great Happiness Management Co., Ltd..Apply to MEDEL MedicalApply to English Fun TutorApply to One Real EstateApply to WorkVenture Technologies