Exactly using plastic mold steel is key of improving plastic mold quality.
塑料模具钢的正确使用是提高塑料模具质量的关键。
This plastic is inferior in quality to glass.
这塑胶的质料比玻璃差。
The built quality is very good, though it is made of plastic material.
虽然是塑料材质，但是手机的外壳做工非常好。
The imports of copper wire selection of quality plastic, quality and safety.
该电线选用进口铜材优质塑料，质量安全。
A good quality plasticizer will remain in the plastic indefinitely.
性质优良的增塑剂能无限期地留在塑料内。
Cooling system of plastic mould can greatly influence the product quality and production efficiency.
冷却系统对于塑件的质量和生产效率有着重要的影响。
Cooling system of plastic mould can greatly influence the product quality and production efficiency.
冷却系统对于塑件的质量和生产效率有着重要的影响。
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