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Technical Advice for Industrial waste management

2 freelancers están ofertando el promedio de $16/hora para este trabajo

$22 SGD / hora
(2 comentarios)
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abdo12345678

I am very well qualified chemist with experience working in waste water treatment.I have graduated from Faculty of science with honor degree in Biochemistry/chemistry department.I have developed many innovative solutio Más

$10 SGD / hora
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