SUPERB HEATER является одним из самых профессиональных электронагревательное оборудование производителей и поставщиков в Китае. Если вы хотите продавать высококачественные электронагревательное
... Read more
Queqing Lingyi Pneumatic Components Co.,Ltd: Find professional pneumatic fittings, air treatment, air preparation, air pneumatic cylinder, air duster gun manufacturers and suppliers in China here!
... Read more
Wellwares (Shijiazhuang) Limited: We're well-known as one of the leading dinnerware set, serveware, glassware, dining furniture, stainless steel flatware manufacturers and suppliers in China. We
... Read more
Amino acids are organic compounds containing amine (-NH 2) and carboxyl (-COOH) functional groups, along with a side chain (R group) specific to each amino acid. The key elements of an amino acid are carbon (C), hydrogen (H), oxygen (O), and nitrogen (N), although other elements are found in the side chains of certain amino acids.