We are factory, have patent of the core part--air valve. we design and assembly ourselves. we have good production procedure and quality control institutions. 
What we think is: all of our products Represents MADE IN CHINA, we make out good quality machine start from make every small parts perfect.
our color sorter already export to many countries:American, Mexico, Brazil, Peru,Thailand, Cambodia, Indonesia, Vietnam, India, Pakistan, Bangladesh, Sri Lanka, Africa, Egypt, Italy, Poland, Iran, Romania, Burma, Korea, Uzbekistan,and so on.
we have some different models to satisfied your different throughput.
Once we confirmed the cooperate relationship, our whole company will try best to serve you, our engineer will fly to your place help you finish assembly and adjust work, our after sales service also wll satisfied you.
the most important,cause we have patent and we design and assembly ourselves. you can pay less buy nice quality machine. if you have any doubts, just come with your raw materials and visit us! see the test yourself!