WorkVenture gives you an inside look at what it's like to work at KEY PLAN DESIGN Co., Ltd., office & team photos, reviews and more. This is the KEY PLAN DESIGN Co., Ltd. Company Page. All content is posted anonymously by employees currently or previously working at KEY PLAN DESIGN Co., Ltd..Apply to Central TechnologyApply to CoachingApply to Cassia FashionApply to The Intern Group