Through unremitting efforts, the three still kettle exported to Korea before Jinma autoclave have excellent product quality, considerate customer service and user satisfaction, and our company has obtained relevant inspection exemption certificates. Therefore, the building materials company of giant group, which produces aerated blocks and aerated plates, took the initiative to contact our company and directly signed 7 contracts with our company φ 2. 68 * 38m autoclave project, and adopts full-automatic pneumatic door opening device (our company has applied for relevant patents). At present, the installation and adjustment personnel of our company have finished their work, and the effect of on-site sample products is very good, which has been highly praised by users.