Excise duty cap on nylon monofilament yarn: effective duty limited to a capped per-kilogram rate when for fish-net manufacture. The notification exempts nylon mono-filament yarn of specified denierages, under the relevant tariff subheading, from so much of excise duty as exceeds the amount calculated at the rate of rupees four per kilogram when proved to the satisfaction of an officer not below the rank of Assistant Collector of Central Excise to be meant for use in the manufacture or repair of fishing nets.