我校电子仪器厂老工人甘善宗同志发明的8012产品——窗门保险器、经省科协、市中级人民法院公证处等部门鉴定试用,认为设计合理、有实用价值。安装这种新型风钩,遇到三级风力时,就能自动借助风力关闭门窗、保护门窗玻璃不受大风的破坏。该产品已成批 8012 products invented by Gan Shanzong, an old worker of our school electronic equipment factory - windows door safety device was appraised by Provincial Association for Science and Technology, Municipal Intermediate People’s Court Notary Office and other departments for appraisal, which is of reasonable design and practical value. Install this new type of hook, met three winds, you can automatically close the windows and doors with wind power to protect the doors and windows glass from wind damage. The product is in bulk