The Ministry of Trade, Industry and Technology of Japan uses chemical methods to decompose recycled PET bottles and use them to make new PET bottles. Currently about 70% of used PET bottles have been recycled as fiber materials. The remaining used PET bottles are collected and recycled by local government agencies. The PET is decomposed chemically, the foreign matter is first removed by multi-stage depolymerization, and the PET bottle is decomposed into BHET through refining and other processes. Teijin Japan recently developed a recycling method for recovering DMT (dimethyl terephthalate) and EG (ethylene glycol) from used PET bottles and put them into production. The method first crushes and cleans the waste PET bottles and then dissolves them in EG to depolymerize the PET at the boiling point temperature of EG and 0.1 MPa pressure to form hydroxyethyl bis-terephthalate (BHET). After filtration, the sludge and additives were removed, BHET was reacted with methanol, and DMT and EG were produced by transesterification at a boiling temperature of methanol and a pressure of 0.1 MPa. The DMT and EG were further separated by distillation. The purity of the recovered EMT and EG was as high as 99.99%. DMT can be converted to pure TPA (terephthalic acid) for the manufacture of bottle grade PET resins. The Ministry of Trade, Industry and Trade of Japan also uses ethylene glycol, which is effectively recycled, as a solvent for dissolving PET bottles. In the Japanese plastics industry, Plastic Industries developed a plastic transparent plate made of waste PET bottles. These products can be used both indoors and out of pure PET raw materials and polycarbonate (PC) all outside the home. There are more than 25% recycled PET in both, and the light transmittance is over 90%. With the same transparency as the PG board, transparency can be maintained even when the rear stage is processed by thermoforming. Both of these products were awarded with the PET Bottle Recycling Promotion Award from the Japan PET Bottle Association as an environmentally friendly product. The plastic industry in the tube also uses the cutting process in the production of PVC sheet to develop and produce recycled sheets, recycle waste PC boards, and produce recycled plastic sheets for reuse.