Dear Sir,GMP manufactureIt is an honor to know you!we are the one of the biggest of manufaturers and exporters in china for the products of Chondritin sulfate and the following products with more than ten years history,30 metric ton pre month of Chondrotin sulfate produced in our factory .HPLC or Cpc testing methodologh .our main products are:Chondroitin sulfate ( shark .bovine .porcine and chicken )Hyluronic acidEnoxaparin sodium Kinds of herbswe can offer you stable quality ,good service,and best competitive price! jf you are interested pls feel free to contact me ,all your news are highly appreciated!Looking forword to your supplierThanks and best regardsmaggie