Hkai sun: Hkai sun: Hkai sun galaw ai lam: Hkai sun galaw ai lam gaw hka hpe madung hku nna npawt nhpang hku nna hka hpe hkap la ai hpe sakse madun nga ai, hpun lakung ni a ntsa kaw na hka n-gun yawm mat ai hpe sakse madun dan ai. Hpun a hka n-gun n-gun n-gun n-gun n-gun n-gun n-gun n-gun n-gun n-gun n-gun n-gun n-gun n-gun n-gun n-nga ai. 1960 ning kaw nna, 1960 ning kaw nna, Amerikan mungdan zawn re ai rawt jat galu kaba wa ai hpaji masa mungdan ni gaw, hkai lu hkai sha ai aten hta hka sum mat ai (sh) hkai lu hkai sha ai aten hta hka sum mat ai (sh) hkai lu hkai sha ai lam a matu patent law law hpe hkai lu hkai sha ai lam a matu madung hku nna lang ai:
(1) Hpun kawa ni hpe hkai ai shaloi, hpun kawa ni hpe hkai ai shaloi, nam kata na nli tum ni hpe n hkai shi yang, shanhte hpe emulsified paraffin. hta lup bang da ai. lakung lakying..
(2) Hkai sun galaw ai n-gun jaw ai lam ni hpe hkai ai. Hkai sun galaw ai aten (sh) galai shai ai aten laman, hka lim ai aten hta hpun law law hpe galai shai na rai yang, hka lim ai aten hta, hka lim ai aten hta, hka lim ai aten hta, n-gun n rawng ai aten hta, shim lum ai galai shai ai lam a matu, shim lum ai galai shai ai lam n nga ai{
(3) Hka lim ai lam hte makawp maga ai lam hpe ninghkap lu na. Hpun ni hte hpun ni hpe emulsified paraffin hte garan kau ngut ai hpang, shanhte gaw grai sawng ai marang htu ai masa hpe hkam jan lu nna, dai namsi hpe lata la ngut ai hpang, hka hta shawng nnan e hka hpe hka ja nna, n-gun ja ai paraffin hte tsi lajang mai ai, dai namsi a asak hpe grai galu hkra galaw lu ai.
Laika man hpaga lam: Laika man lata ai lam hta lawm ai laika buk law malawng gaw, kata lam hku nna, kata lam hku nna hpring nga ai, dai gaw, laika man n-gun a npawt nhpang hpe hkap la ai sumla hkrung hpe, hka hpe ninghkap lu ai atsam kaja nga ai hpe galaw ya ai, dai gaw, n-gun rawng ai hka htung ni hpe lang ai, dai gaw, n-gun rawng ai lam hpe shabyin ya lu ai, dai gaw, 20% kaw nna 40% du hkra, n-gun rawng ai, n-gun dat hpe bai gram lajang ya lu ai. Paraffin hpe 20% kaw nna 40% du hkra, galai shai ya lu ai. kaga akyu langai mi gaw, laika man a fiber structure hta garan ginhka ai lam gaw, laika man a fiber structure hta langai sha re ai akyu gaw, emulsified paraffin hpe jat bang ai a akyu gaw, resin binder hpe pigment amyu myu hte kayau ai a akyu ni hpe ninghkap lu ai, dai majaw, laika ka lu ai atsam hpe grau kaja hkra galaw lu nna, laika dip shapraw lu ai atsam hpe grau kaja hkra galaw lu nna, dang ai wa a galu kaba ai laika hpe, shi a ntsa na n-gun (sh) n-gun rawng ai paraffin amyu myu hku nna, grau nna galaw lu nna, gram lajang lu ai. n-gun ja ai laika dip ai laika buk. hpe galaw shapraw na matu hka hte seng ai tsi langai hku nna gyin shalat da ai.