First of all you have to meet the following conditions: (1) Chinese citizens of origin, age 22 to 45 years old, height 165cm or above, education college or above, no bad habits healthy male. (2) healthy, no hepatitis B, color blindness, various sexually transmitted diseases, family history of genetic diseases. (3) Able to masturbate method to extract sperm, abstain from sex for 3-7 days before sperm extraction. (4) Have individual contact information. (5) Be able to come to the sperm bank for blood re-examination 6 months after stopping sperm donation. If you meet the above conditions, you are welcome to contact us at any time, your first visit need to bring proof of education (student card, diploma or academic certificate are acceptable) and your original ID card, the staff will first do a more comprehensive health check for you free of charge, once the health screening is qualified, after signing the sperm donation agreement, then congratulations on becoming a glorious sperm donor volunteers! After that you can plan your time to contact the staff and go to the sperm bank to provide sperm. The sperm collection process is done in a comfortable and quiet environment in the sperm collection room, where you can comfortably take out your precious sperm and deliver it to the staff. To save your time and to ensure the quality of the donated semen is excellent, it is recommended that you abstain from sex for 3-7 days prior to sperm collection, avoid overexertion, come to the sperm collection in good spirits, and take a shower the night before sperm collection. The whole process will take about 10 times depending on your semen condition. After six months of semen freezing, please visit the sperm bank once again to have your blood drawn and retested. If the results are normal, the frozen semen can be made available to the public for assisted reproduction, so that your semen can finally help a sterile family regain their happiness, and they will thank you from the bottom of their hearts for your gift. Sperm donation is a very noble humanitarian act, and the sperm bank will give volunteers the necessary compensation for transportation and lost work, and all the tests required for you to donate sperm are free of charge.