Biogas system is the pivot in material recycling and energy transformation of a complex agro-ecosystem.

沼气发酵系统是复合农业生态系统中物质循环和能量转化的枢纽。

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Recycling zinc waste: zinc alloy recovery, zinc slag melt, coarse zinc recovery, crushing zinc recovery, down zinc material recycling, etc.

回收锌废料：锌合金回收、锌渣回收、粗锌回收、破碎锌回收、回炉锌料回收等。

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The environmental pollution, material recycling aspect and so on use, worker's health and security frequently can attach the new limiting condition to the choice of material.

环境污染、材料的回收利用、工人的健康及安全等方面经常会对材料选择附加新的限制条件。

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Some greens worry that the energy used to send a boatload of material for recycling across the world is not justified by savings at the other end.

ECONOMIST: How China is encouraging the British to recycle their waste

In the meantime, Lowry hopes to expand ocean plastic to other product lines and increase the amount of ocean material in the recycling mix.

FORBES: How A Company Recycles Ocean Plastic Twice The Size Of Texas

"We don't want recycling material going into landfill - it's not waste, it's a commodity and we want to find an outlet, " SITA's Mike Dobson said.

BBC: South West recycling goes abroad