Sign up for an Award
Participate with your entry in one of our professional or student awards.Sign up for an award
You are using an outdated browser. Please upgrade your browser to improve your experience.
When we open the envelope, it's easy to tear the letter if the size of letter is just a bit smaller than the size of envelope. The letter-protect envelope solves the problem. There is a plastic tape pasting on the inside of the front cover and the tape is parallel to the edge of the front cover. One end of the plastic tape is outside of the envelope. We can take the end to open the envelope but not tear the letter.
Hangzhou, ZHEJIANG PROVINCE, China