许多产品的质量取决于其柔韧度或硬度，如，包装、纸牌、硬纸板织物、金属丝、管、塑料和金属部件。
Quality in many products depends on their degree of flexibility or stiffness. Packaging, playing cards, boxboard fabrics, containers, wire, tubing, many plastic and metal parts are examples.
目前，已经许多产品得到开发和应用，如杀菌剂，植物生长调节剂和药物等。
At present, many products have been developed and applied such as fungicides, insecticides, plant growth regulator and drugs.
许多产品宣传材料如小册子、传单、目录等都是免费的，消费者如果喜欢就可以带走。
Many promotional materials such as brochures, leaflets, catalogues, etc. are free. Customers can take them as they like.
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