<prompt> Umusho 1: I-Post-metallocene ibhekisela esigabeni se-metallocenes catalysts ezingekho ezifanayo. Umusho 2: I-post-metallocene ibhekisela esigabeni se-metallocene catalysts ezingafani. Umbuzo: Ingabe umusho 1 nomusho 2 usho into efanayo? Yebo noma Cha?  <response>: Yebo Yebo 