WorkVenture gives you an inside look at what it's like to work at Magma Construction Supply Co., Ltd., office & team photos, reviews and more. This is the Magma Construction Supply Co., Ltd. Company Page. All content is posted anonymously by employees currently or previously working at Magma Construction Supply Co., Ltd..Apply to OxfamApply to TopreApply to Margin FrameApply to Stellar Hospitality