用安全套时被忽视的细节1．使用前应查看生产日期和有效期．过期的避孕套已经变质,容易破裂,不宜使用。2．避孕套必须保存在阴凉、干燥和不接触酸、碱、油的环境中。如接触上述条件后变得发粘、发脆,即使在保质期内也不应再使用。3．避孕套有不同的规格,应根据阴茎勃起时的大小选择适当型号,否则过紧易破裂,过松易滑脱,都会影响使用效果。4．避孕套不宜事先展开．而应在勃起的阴茎头上 Neglected details when using condoms 1. Before use, check the production date and expiration date. Expired condoms have deteriorated, easy to rupture, should not be used. 2. Condoms must be stored in a cool, dry and non-contact acid, alkali, oil environment. Such as contact with the conditions become sticky, crisp, even in the shelf life should not be used. 3. Condoms have different specifications, should be based on the size of the penile erection, select the appropriate model, or too easy to crack, too loose easy to slip off, will affect the use of results. 4. Condoms should not be expanded in advance. But should be in the erect penis head