1. Yongli company signs a long-time after-sale service agreement with customers.
2. We provide rational and practical design according to customers' request.
3. We send engineers to assemble and test the machine within the period as agreed in the contract.
4. Within warranty period, we provide free repair if quality problems emerge.
5. We provide free training of operation and maintenance for customers.
6.We supply high quality accessories in low price.
7. We make an excellent filing of customers for long-term following-up service.

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