revision of the order for enforcement of the act on the evaluation of chemical substances and regulation of their manufacture etc. based on article 17 and 22 of act on the evaluation of chemical substances and regulation of their manufacture etc. hereinafter referred to as the act the following will be designated as class i specified chemical substances which need authorization to manufacture or import.1. short-chained chlorinated paraffins straight-chain chlorinated hydrocarbons with chain lengths ranging from c10 to c13 and a content of chlorine greater than 48 per cent by weight 2. decabromodiphenyl ether based on article 24 of the act the following will be designated as products prohibited from importation when short-chained chlorinated paraffins straight-chain chlorinated hydrocarbons with chain lengths ranging from c10 to c13 and a content of chlorine greater than 48 per cent by weight are used in them.1. lubricating cutting and hydraulic oils 2. chemicals for flame-retardant treatment for textiles 3. plasticizers for resin and rubber 4. paints limited to those for waterproof and anti-flammable 5. adhesives and sealing fillers 6. fatliquoring agent for leather also the following will be designated as products prohibited from importation when decabromodiphenyl ether are used in them.1. flame-retardant textiles 2. chemicals for flame-retardant treatment for textiles resin and rubber 3. adhesives and sealing fillers 4. flame-retardant floor covering 5. flame-retardant curtains 6. flame-retardant banner-flags additionally the following will be designated as products prohibited from importation when pfos and its salts are used in them. 1. etching agents limited to those for uses in the manufacture of piezoelectric filters or of compound semiconductors which enable radio to transmit and receive radio waves with more than 3 mhz of frequencies 2. resist for semiconductors 3. professional-use photograph films it should be noted that some products used pfos and its salts already notified by g tbt n jpn 307.