WorkVenture gives you an inside look at what it's like to work at Jewel Tech International Manufacturing Co., Ltd., office & team photos, reviews and more. This is the Jewel Tech International Manufacturing Co., Ltd. Company Page. All content is posted anonymously by employees currently or previously working at Jewel Tech International Manufacturing Co., Ltd..Apply to TÜV RheinlandApply to Graphic BuffetApply to Bangkok DusitApply to WorkVenture Technologies