Green Science Alliance Co., Ltd. Developed Nano Cellulose / Biodegradable Plastic Composite Color Masterbatch (WK-intern) - KAWANISHI, Japan - In these several decades, human population explosion has caused serious environmental problems on this planet. Especially plastic pollution problem is getting severe in the world and the microplastic problem in the marine environment is becoming a devastating issue. It is predicted that the amount of plastic garbage will be more than that of fish by 2050. There are also some scientific reports that these microplastics are already in our human body. Therefore, plastic recycling, reduction of plastic usage itself, and biodegradable plastic usage and development,