Fascination About quantracmoitruonglaodong
You need to go away a little thread about 1/2” (1cm) prolonged. Leaving simply a little bit makes sure that you don’t accidentally Minimize the knots. Tuck the thread beneath the patch.
a) V?n b?n ?? ngh? công b? ?? ?i?u ki?n th?c hi?n ho?t ??ng quan tr?c môi tr??ng lao ??