Quality concept: exceed customer's requirements and expectations.

Third, the marketing concept: sell word of mouth before buying products.

Fourth, the technical concept: there is no progress without elimination.

Service concept: respect customers, they will always be our good friends.

6. Innovative concept: Qi Xin works together and everyone innovates.

Seven. Competition concept: people have nothing, people have me new, people are new and I am superior, and people are superior and I am refined.