Bontecn Group muab cov neeg siv khoom ib lub khw. Txhua pawg tuam txhab lag luam tau koom nrog hauv kev tsim cov khoom siv PVC thiab roj hmab thiab yas additives. Nws yog ib pab pawg kws tshaj lij kev lag luam koom ua ke kev tshawb fawb, kev tsim kho, muag, kev pabcuam thiab kev nqis peev.With science thiab thev naus laus zis raws li ...
Nyeem ntxiv