请帮我把这句话用英文降重复率：Alginate was purchased from Sinopharm Shanghai China with a molecular weight of 100 kDa determined by the high-performance size exclusion chromatography Ref Pectin was purchased from Yu

Alginate was purchased from Sinopharm (Shanghai, China) with a molecular weight of 100 kDa determined by high-performance size exclusion chromatography [Ref]. Pectin was purchased from Yuanye Bio-Technology (Shanghai, China). Fucoidan from Fucus vesiculosus, chondroitin sulfate A sodium salt, and dermatan sulfate were purchased from Sigma (MO, USA). Hyaluronic acid and chondroitin sulfate C sodium salt were purchased from Macklin (Shanghai, China). Laminarin, fucoidan from Ascophyllum nodosum, and heparin sodium were purchased from Aladdin (Shanghai, China), Carbosynth (Oxford, UK), and Sangon Biotech (Shanghai, China), respectively.