WorkVenture gives you an inside look at what it's like to work at Gangyan Diamond Tools (Thailand) Co., Ltd., office & team photos, reviews and more. This is the Gangyan Diamond Tools (Thailand) Co., Ltd. Company Page. All content is posted anonymously by employees currently or previously working at Gangyan Diamond Tools (Thailand) Co., Ltd..Apply to HitachiApply to CosminaApply to K leasingApply to Inoue