The head-protecting ring can be made into various head-protecting caps.
有这种护颅头圈可以作成各种护颅帽。
The utility model relates to a head-protecting ring, which is an article for daily use to protect the brain against injury.
护颅头圈是一种在人体跌伤时，保护大脑免受损害的生活用品。
Light bulbs, containing both electrodes decline in protecting ring. Effectively reducing electrode sputtering, reduce blackheads, prolong lamp life.
灯管光衰小，两端电极装有内保护环。有效减少电极溅射，减少黑头，延长灯管寿命。
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