4 sentences

1. 塑料在模具中冷却后即可成型。

   sù​liào zài mú​jù zhōng lěng​què hòu jí kě chéng​xíng.

   The plastic can be molded once it cools in the mold.

   Source: Dong Chinese Dictionary

2. 这些零件是通过挤压成型工艺制造的。

   zhè​xiē líng​jiàn shì tōng​guò jǐ​yā chéng​xíng gōng​yì zhì​zào de.

   These parts are manufactured using an extrusion molding process.

   Source: Dong Chinese Dictionary

3. 这种钢材需要经过反复锻炼才能成型。

   zhè zhǒng gāng​cái xū​yào jīng​guò fǎn​fù duàn​liàn cái néng chéng​xíng.

   This steel needs to go through repeated forging to take shape.

   Source: Dong Chinese Dictionary

4. 经过长时间的讨论，这个项目的设计方案终于成型了。

   jīng​guò cháng shí​jiān de tǎo​lùn, zhè​ge xiàng​mù de shè​jì fāng'àn zhōng​yú chéng​xíng le.

   After a long period of discussion, the design for this project has finally taken shape.

   Source: Dong Chinese Dictionary