WorkVenture gives you an inside look at what it's like to work at Mitsiam Plastics Co., Ltd., office & team photos, reviews and more. This is the Mitsiam Plastics Co., Ltd. Company Page. All content is posted anonymously by employees currently or previously working at Mitsiam Plastics Co., Ltd..Apply to FujiApply to SIAM HOTLINEApply to Brand WealthApply to WorkVenture Technologies