Before selling
1. Set up customers file, and arrange professional sale engineers to introduce company products and services to customers in detail.
2. If customers are interested in our products, we will send professional technicians to survey the installation environment.
3. Make the solution according to different customers’ requirements.

During selling
1. Machine installs and test by qualification engineers. 
2. Ensure all the products we provided are qualified and new. The working life of the main engine is 15 years.
3. Construct and install the heat pump according to national relevant policies strictly, and ensure high quality delivery on time.
4. Test and debug the equipments strictly to ensure the safety and stability.
5. During the delivery, provide comprehensive and professional technical training on instructions and maintenance to customers

After selling
1. We promise to offer free consulting call in 7×24 hours mode to solve the problems found in practice. The number is 86-755-83549668
2. KINGDIG products guarantee is 18 months from ex-factory date. Within 18 months, if any components of your products damaged because of quality, we supply new replacement for free. 
3. After the expiration of the quality assurance, we will continue to provide lifelong maintenance services, with just charging some cost price.