… usually by the endocrine glands, is governed by the sympathetic and para-sympathetic systems. Hormones are carried by the blood, … by synthesis. A hypertension hormone, it stimulates the sympathetic nervous system, increases the number of …
… acid (CH 2 =CHCOOH) * . Colourless liquid with acrid odour. Polymerises readily; monomer for polyacrylic acids and other acrylic polymers. (2) Methacrylic acid . The polymers of esters of this acid constitute plastics …
… They include : (1) Postage stamps , normally used in prepayment of postal transmission fees but in some countries … those for purchase by the public as a means of making payments, compulsory or voluntary, to the State or other …
… 39.15 ‑ Waste, parings and scrap, of plastics. 3915.10 ‑ Of polymers of ethylene 3915.20 ‑ Of polymers of styrene 3915.30 ‑ Of polymers of vinyl chloride 3915.90 ‑ Of other plastics The …
… ‑ Tubes, pipes and hoses, rigid : 3917.21 ‑ ‑ Of polymers of ethylene 3917.22 ‑ ‑ Of polymers of propylene 3917.23 ‑ ‑ Of polymers of vinyl chloride 3917.29 ‑ ‑ Of other plastics …
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