Dear Sirs, We have shortage on HC-300 Si Grease. Our other division ( Audio Video ) have been using HC-220, so we're thinking to swap HC-300 with it. but we need to make sure and know, what is the different? and also give us technical advise. Could you send us specification sheets of HC-220 & HC-300? We need your response urgent. Thank you Regards, ADHI SAPTADI R&D Display LG Electronics Indonesia