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Trees,Website:http://www.plantextractsr.com, up to 25m, Bust up to 1m or more. Bark grayish brown, irregular scales like crack, crack red-brown. Whorled branches, twigs stout, pale orange or pale yellow; winter buds broadly elliptic, apex acute, reddish-brown. Leaves needle-shaped, two needles in bunches, dark green, stiff, long 10-15cm, diameter of about 1.5mm, fine-tooth edge, there are holes on both sides of the line; at first light brown sheath, gradually turns dark gray. Male cones cylindrical, long 1.2-1.8cm, generate new branches poly spike; female cones inflorescence broadly ovate, long 7mm, purple, was born in the year of new branches. Cones oval or round oval, long 4-9cm, with short stems, downward bend down, pale yellow or brownish yellow when ripe, persistent for several years; the central seed scales nearly oblong-obovate, 1.6 2cm, scales shield hypertrophy, uplift or slightly elevated, flat diamond or diamond-shaped polygonal transverse ridges significantly, umbo raised in a point. Seeds oval or long oval, light brown, striped, even the wing length 1.5-1.8cm. Flowering from April to May, fruit ripening in October next year.Product Name:Rosin Colophony Extract PowderLatin Name:ColophoniumPart Used:gum rosinAppearance:Light yellow to light brownSpecification:10:1Packaging Details:1 Aluminmum Foil Bag/25 Kgs DrumShelf Life:Two years when Properly StoredStorage:Store in cool and dry places.Please Keep away from strong lightITEMSPECIFICATIONDescription:AppearanceLight yellow to light brownOdorCharacteristicParticle size100% pass through 60-100?mesh?sieveBulk Density45.0g/100mL~65.0 g/100mIdentification:Color ReactionPositive ReactionTests:Loss on drying(5h at 105℃)＜5.0%Ash(3h at 600℃)＜5.0%Heavy metals(as Pb)＜10ppmArsenic(as AS2O3)＜1ppmAssay:Rosin Colophony?Extract Powder?10:1Microbial:Total bacterial counMax.1000cfu/gYeast & MouldMax.100cfu /gEscherichia coli presenceNegativeSalmonellaNegative1. Rosin Colophony Extract ?can expel dampness; pus Sida;2. Rosin