· Products not sold and produced by the Company;

-Failure to produce a valid purchase voucher;

· without the consent of the company, unauthorized disassembly, maintenance of products;

Products beyond the warranty period;

· The customer unilaterally selects the wrong product;

· Products damaged during customer delivery;

The product is damaged due to irresistible factors and natural factors, such as typhoon, ultra-high voltage, earthquake, environmental humidity, etc;