WorkVenture gives you an inside look at what it's like to work at Charter Conzentration Co., Ltd., office & team photos, reviews and more. This is the Charter Conzentration Co., Ltd. Company Page. All content is posted anonymously by employees currently or previously working at Charter Conzentration Co., Ltd..Apply to VaropakornApply to K InnovationApply to Patrick & CoApply to Business Service