what is pine bark extract

{"cid":"91155432","title":"manufacture Pine bark Extract OPC 95% Fighting aging, help wrinkled skin, Shaanxi Yongyuan Bio-Tech , herbal extract","imgUrl":"https:\/\/img.silkroadsl.com\/nimg\/5b\/01\/83723966de4811056f6500919822-200x200-1.jpg","attrs":{"Price":"1","Brand Name":"Yongyuan","Model Number":"Powder","Minimum Order Quantity":"1","Delivery Time":"5-7 work days","Place of Origin":"China","Certification":"ISO9001","Packaging Details":"25 kg\/drum","Payment Terms":"T\/T","Supply Ability":"1","Product Name:":"Pine bark Extract","Latin Name:":"Pinus Larix","Specification:":"OPC 95%","Test Method:":"UV"}}

{"cid":"91197308","title":"Proanthocyanidins 95% Pine Bark Extract Powder","imgUrl":"https:\/\/img.silkroadsl.com\/nimg\/0f\/a9\/e33d1c8cfe4504abe845d18a0318-200x200-1.jpg","attrs":{"Price":"Negotiable","Brand Name":"OEM","Model Number":"","Minimum Order Quantity":"1kg","Delivery Time":"2-3 working days after payment confirmed","Certification":"Kosher, FDA, ISO","Place of Origin":"China","Payment Terms":"T\/T, L\/C, Western Union","Supply Ability":"1000 KGS\/Month","Packaging Details":"1kg Aluminum Foil Bag, 25kg\/drum(37cm*37cm*50cm)","Product Name":"Pine Bark Extract Powder","Latin":"Pinus massoniana Lamb","Ingredients":"Proanthocyanidines","Purity":"95%","Appearance":"Brown-red powder","Particle Size":"100% pass 80 mesh","Sample":"10-20g","Test Method":"UV"}}

{"cid":"91185842","title":"health care product nutrition supplement pine bark extract","imgUrl":"https:\/\/img.silkroadsl.com\/nimg\/f8\/60\/0231cee4a9f78d9fd7af4c2a2774-200x200-1.jpg","attrs":{"Price":"US$10-15\/kg","Brand Name":"complex","Model Number":"BGH-190","Minimum Order Quantity":"1kg","Delivery Time":"3 workdays after payment","Certification":"ISO9001\/Halal\/Kosher","Place of Origin":"china","Payment Terms":"L\/C, D\/A, D\/P, T\/T, Western Union, MoneyGram","Supply Ability":"5000000kg per year","Packaging Details":"1kg 5kg 25kg two plastic bag inside,aluminum foil bag or drum outside","Type":"Herbal Extract","Variety":"pine bark extract","Form":"Powder","Part":"bark","Packaging":"Drum","Place of origin":"Shaanxi,China(Mainland)","Key word":"pine bark extract","Color":"red brown powder","Water soluble":"good water soluble"}}