As discussed with via phone K.Chanachon ,The material installation for Equipment E-2050 & V-1120 them a have advice material Aeroflex change be cellular glass
พวกเขาแนะนำให้เปลี่ยนจากแอโรเฟลกเป็นโฟมกลาสแทน
also they are advice that material Aroflex change be foamglass