... sample approvalSpecificationsBusiness Greeting Card 1) different sizes 2) voice and melody are available 3) promotion giftsBusiness Greeting ... for friends . Our main products include:- Voice, melody, LED, recording, vibrating module for toys and greeting card- Offset(4C, ... card- Module with light sensor and push / motion switch.- IC masking or OTP chips (3 sec~350sec )- Music opener, voice opener, ...