Please capitalize where necessary: discover why an oil needs to be strong.
A: Discover why an oil needs to be strong.
Q: 273200 manufacture of other electronic and electric wires and cables

A: 273200 Manufacture of other electronic and electric wires and cables
Q: sources: coface payment survey 2015 & 2016 sources: coface payment survey 2015 & 2016
A: Sources: Coface payment survey 2015 & 2016 Sources: Coface payment survey 2015 & 2016
Problem: we welcome trade enquires from importers / exporters, wholesalers and bulk quantity orders from all over the world. we offer customers a wide range of product services.
Can you repeat this sentence, but capitalize it?
Answer: We welcome trade enquires from importers / exporters, wholesalers and bulk quantity orders from all over the world. We offer customers a wide range of product services.
Text: and in order to thank all the uses' support and also as a return, dll suite introduced this free download service to help millions of pc users suffering from dll errors like 4mmdat.sys.

Correct capitalization: And in order to thank all the uses' support and also as a return, DLL Suite introduced this Free Download Service to help millions of PC users suffering from DLL errors like 4mmdat.sys.
Problem: dha does not colour other surfaces than the stratum corneum, i.e. not the mucous membranes.
Can you repeat this sentence, but capitalize it?
Answer:
DHA does not colour other surfaces than the stratum corneum, i.e. not the mucous membranes.