Yes. Qingdao Sainuo Chemical Co.,LTD. will arrange a sample charge refund once an order is placed. Generally, we will set up a refund mechanism for customers who would like to place an order with a product quantity higher than the minimum order quantity set by us. The samples are only provided for free in the case of customers having a desire for further cooperation. Sainuo Chemical guarantees offering samples with the same quality as the ordinary product, which has a high pass rate. Moreover, we offer discounts for large orders to maximize mutual benefits.

Sainuo Chemical is a professional company dedicated to the design, development, manufacture and sale of polypropylene wax. As one of Sainuo Chemical's multiple product series, aluminate coupling agent series enjoy a relatively high recognition in the market. The product is harmless. During the surface treatment, it is coated or polished with a special layer to eliminate formaldehyde and benzene. People can be reassured that the product contains no methanal or other harmful substances which may cause a health risk.

Our mission is to provide customers with a service they can trust. We make every effort to achieve sustained, profitable growth by providing services which consistently satisfy the needs and expectations of our customers. Call now!