The our company one has really very much sincerely cooperates with you, hoped your firm can see our sincereintention!
我公司一真很有诚心的跟您合作，希望贵公司能看到我们的诚心！
2
Call with the intention of really finding out what’s going on in their life, be sincere about it, you may come to find out many interesting things that might even benefit you.
问问他们生活过得怎么样了，一定要真诚，也许你能发现许多有趣的事，有的甚至会对你有利。
3
When you receive other people's praise which is not due to you, beware of the intention behind their words. They are probably not sincere and have an ulterior motive.